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Much of the GR-1 chassis and running gear is based on the Ford Shelby Cobra Concept, which was presented one year earlier at the 2004 North American International Auto Show. As with the Ford Shelby Cobra Concept, GR-1 project was led by Manfred Rumpel and developed by Ford's Advanced Product Creation group.
The GR-1 uses a 6.4L all-aluminum V10 engine and also has certain components from the Ford GT. The GR-1 is rated up to 605 hp (451 kW) and up to 501 lb·ft (679 N·m) of torque. It uses a 6-speed manual transmission.
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