When the Roush 380R arrived in 2003, based on a standard Mustang GT, the Stage 3 offered an Eaton Roots-type supercharger with an air-to-water intercooler, a new intake, a secondary sheave front ...

Want a new Ford Mustang with more than 800 hp and a warranty ... The blower itself also has twin intakes, and Roush says that allows for 34 percent more throttle area than its competitors.