The Roush Stage 3 Mustang is the pinnacle of Jack Roush’s Mustang lineup and the 2014 model is no different as he offers three horsepower variations including two with the new optional Ford Racing “Aluminator” engine. The standard ROUSHcharged Mustang pumps out 575 horsepower with a Phase 2 and 3 Aluminator option offering 625 or 675 horsepower respectively.