Ford Racing Performance Parts had presented in 2003 at SEMA the Focus RS8, which was equipped with the Cammer V8 crate engine of Ford.
The Cammer is a 5.0-liter liter V8 with forged internals and a reinforced crankshaft that delivers 420 hp with 500 Nm of torque. The power was transferred to the rear axle, the front and rear suspension were upgraded and the car’s transmission was a five-speed manual gearbox of Tremec, while the RS8 had also a limited slip differential.
It had Brembo brakes and a Quaife differential lock. The most impressive of all was that Ford Racing Performance Parts offered all of the above as an upgrade package, for about $30,000 so that anyone who wanted to convert his Focus RS in a rear-wheel car, could do it, but the car was never released as a production vehicle, with only a few people converting their Focus RS to RS8.