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GMG is proud to offer minor and major restoration work for all vintage road and race cars. Our staff has years of experience in restoring vehicles to there period correct authenticity. So, if its a vintage race car that you wish to restore to its original glory or a vintage automobile which will be a cherished museum piece or a weekend driver, we have the experienced staff and leading industry contacts world wide to bring your cherished automobile back to its original standards.

We are currently accepting vintage road and race cars from Porsche, Ferrari, Lamborghini, Aston Martin and Lotus.

Specializing in all vintage 911 road and race cars including RS,RSR 956 and 962 race cars.

All vintage Ferrari automobiles including road and race cars.

GMG restoration services include:

• Mechanical restorations: engine,gearbox, suspension
• Electrical restorations: From wiring repairs to complete chassis re-wiring.
• Chassis and Body restoration: We can repair and restore aluminum body work,composite panels, monocoque chassis
• Interior restoration: We can restore any and all leather work our craftsman are some of the most talented in the world, there old world approach to leather working is some of the best anywhere

We also offer full fabrication, welding and machining services.

GMG specializes in the performance tuning of Porsche, Audi, and Ferrari automobiles. GMG works with today’s leading tuning equipment from worldwide automotive technology leaders.  We offer installation of performance-related parts and equipment plus we engineer, develop and manufacture our own line of performance products and wheels under the GMG World Challenge and LMS lines for Porsche , Audi and Ferrari vehicles.

GMG is a leading installer and tuner of standalone engine management systems from Motec and Link as well as AIM.  As a development partner with GIAC, we can go beyond the ECU reflashing offered by most shops to instead custom calibrate a software tune for your specific vehicle with your specific hardware.  GMG uses a state of the art chassis dynamometer housed in its own diagnostic studio with a controlled environment and proper airflow to simulate all road and race conditions. The Mustang 500SE 2WD and 4WD chassis dynamometer is housed in a sound proof room that flows over 100k CFM per minute.  The end result is a properly calibrated tune whether you are running a stock style ECU or a complete independent stand alone ECU.

GMG’s dyno diagnostic studio has been used by today’s leading automobile manufacturers and top tuners as well as aerospace and military corporations due to its real world performance figures and unsurpassed repeatability.

GMG offers a concierge service based around a driver’s particular needs for each tuning project. Our staff is trained and well-versed in the needs of a particular driver and his or her intended use of the vehicle.   Unlike most shops that sell parts out of a catalog, GMG brand specialists have firsthand experience with the products , services and results involved around each vehicle modification.   No two individuals are alike so no to vehicles are tuned the same way at GMG.

GMG is proud to be a technology partner to Beissbarth and is one of the exclusive facilities in North America which has used this technology since 2004. Beissbarth is the OEM supplier of alignment measuring equipment to some of the leading automobile manufacturers in the world including Porsche, Audi, Mercedes, BMW, VW and Rolls Royce as well as the chosen aligner for Porsche Motorsport on the 911 GT3R Hybrid.

The Beissbarth aligner is one of the most technologically advanced aligners on the market, which is not a surprise considering Beissbarth has been manufacturing this type of equipment for over 100 years. The aligner is so precise and advanced that it is also used as a measuring device for collision repair to pinpoint problem areas. It even has the ability to compensate for lowered vehicles and vehicles with suspension geometry out of factory specifications.

Whether your car is stock and in need of alignment or your car has been lowered and you need to ensure it is aligned properly to minimize tire wear, GMG techs along with the Beissbarth aligner will get the suspension geometry into perfect specification, be it factory or custom, without any problems.

The level of equipment and training that each of our techs receive when it comes to suspension work has made GMG the facility that many dealers and other shops in Southern California send their alignment work to. GMG is the shop of choice when others can’t get a car into specification or if they have a car that is modified beyond the scope of a standard aligner.

For those customers who require more track-oriented alignments, GMG’s racing department offers specialized care and expertise including setting rake, adjusting ride height, corner balancing and more.

GMG offers specialized alignment services specific to Porsche, Audi, Ferrari, Mercedes, Bentley, Rolls Royce, Lamborghini, Lotus and McLaren.

CORNER BALANCING

GMG’s experience in chassis set up is second to none in the industry and now road car customers can benefit from this experience.

GMG offers competition corner balancing and chassis setup for race cars and road cars which are equipped with coil over type adjustable suspensions. Corner balancing is a key component in improving your vehicles handling a proper corner balance will optimize the vehicles handling characteristics while also improving the vehicles balance. A corner balance is simple effective way to get the most out of your vehicles handling performance.

GMG offers custom electrical work including the building of custom chassis and engine harnesses for engine swaps, race cars, standalone engine management systems, data acquisition systems, telemetry, in- car video systems for driver coaching and more.   All work is done by seasoned electronics specialists to meet or exceed OEM manufacturer specifications or aerospace /MIL spec requirements.

If you are restoring a car and need a custom harness, GMG is capable of providing a stock type of harness or one that integrates modern electronics with full data acquisition and multiple systems.

GMG also handles electronic traction control, launch control, antilag integration, standalone ECUs, suspension telemetry, shock pots, and custom dash systems from Motec , AIM , and Bosch Motorsport.

GMG does custom race electronics for modern and vintage on or off-road vehicles from sprint to endurance racing, with a focus on getting you the performance and data you need in your unique driving environment. We specialize in several vehicle platforms:

• Modern day Porsche GT3 Cup / RSR
• Vintage Porsche race cars such as the 956/962 platform
• Ferrari 360/430 Challenge and race cars, F40, F50 racing electronics
• BMW M3 club racing or pro racing configurations
• Audi R8 GT3 LMS /Grand Am /S4 Competition and Audi Vintage race cars such as DTM, Supertouring, TransAm, IMSA and all Audi Rallye cars
• GMG is a dealer of : ( logos of the following companies please)
• Motec
• Bosch Motorsport
• Link
• AIM
• Chase Cam
• GMG is a proud to be an authorized technology partner for GIAC, and APR.

GMG specializes in the performance tuning of Porsche automobiles. GMG is an authorized dealer and technological partner with many of the industry leading companies and we also engineer, develop and manufacture our own line of performance products and wheels under the GMG World Challenge and LMS lines. With the technology, experience, and knowledge transferred from our professional race program, these upgrades will further refine will further refine your road going vehicle.

GMG is a leading installer and tuner of standalone engine management systems from Motec, Link, and AIM. As a development partner with GIAC, we can go beyond the ECU reflashing offered by most shops and, instead, perform a custom calibrated software tune for your specific vehicle with your specific hardware.

Using our Mustang 500SE 2WD and 4WD chassis dynamometer housed in a sound proof cell, our dyno test cell is capable of producing a controlled environment and proper airflow to simulate all road and race conditions. The end result is a properly calibrated tune whether you are running a stock style ECU or a complete independent standalone ECU. GMG’s dyno cell has been used by today’s leading automobile manufacturers and top tuners as well as military contractors due to its real world performance figures and unsurpassed repeatability.

GMG offers a concierge service based around a driver’s particular needs for each tuning project. Our staff is trained and well-versed in the needs of a particular driver and his or her intended use of the vehicle. Unlike most shops that sell parts out of a catalogue, GMG brand specialists have firsthand experience with the products, services and results involved around each vehicle modification. No two individuals are alike so no two vehicles are tuned the same way at GMG.ble in the country.