The Ford Mustang GTP was an American race car constructed to compete in the IMSA GTP series by Ford in 1983, based on the "Fox-Body" generation of the Ford Mustang road car. It used a 2.1-litre turbocharged variant of the Ford Cosworth BDA straight-four engine, capable of producing around 600 hp (447 kW; 608 PS); unusually for an IMSA GTP car, the engine was fitted in the front of the car. Zakspeed would replace the car with the Ford Mustang Probe for 1985, while Roush Performance would build the more successful V8-powered Ford Mustang Maxum GTP in 1987.

In 1983, the GTX class of the IMSA GT Championship became obsolete, and was replaced by the IMSA GTP category. As a result, Ford needed a new car, as their Ford Mustang GTX was no longer eligible for competition. Bob Riley was selected to design the car, which, somewhat unusually, was front engined; it used a 2.1-litre turbocharged variant of the Ford Cosworth BDA straight-four engine, capable of producing around 600 hp (447 kW; 608 PS).Roush Performance and Protofab built the chassis and bodywork, which consisted of carbon fibre panels bonded to a carbon fibre and Nomex composite monocoque chassis, which was reinforced with Kevlar in key areas. The car's aerodynamics were configured to maximize the downforce generated by ground effects, although the suspension was fairly conventional; double wishbones with KONI coil-over springs, and adjustable sway bars at both ends of the car. Ford's chairman, Philip Caldwell, was positive about the car's development, stating that he felt it was "a clear edge of technological development." The car used a fairly conventional Hewland five-speed manual transmission to transmit the power, and it weighed approximately 1,770 lb (803 kg). Three cars were built as part of the program.

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