Ford Mustang GTRoush Performance Products has launched the 5.0L ROUSHcharger Tuner Kit for the 2011 "Ford Mustang GT". Shedding off the initial output ratings of 412 hp from the 5.0-liter Mustang, the engine now produces 550 hp on pump gasoline with more than 470 lb-ft of torque.Also included in the kit are 47 lb. fuel injectors, high-flow fuel rails, a high-flow ROUSH air lid, and a twin 60mm