There’s no question that many great things come in pairs. Roush Performance isn’t about to let this old adage dry up either. The official announcement of two Ford Mustang variants, one of which is entirely new, is going to give the previously exhibited 2010 Roush 427R some new stable mates. The 2010 Roush Stage 3 and the new nameplate, the Roush 540RH “Hammer”, have entered the aftermarket scene with poise, passion, and most importantly, performance. These new Roush Mustangs pump out 540 horsepower and 510 lb.-ft. of torque–plenty to go around and enough to bring a grin to any grump’s face. The power is bolstered by a second-generation R2300 supercharger and is laid to the pavement by superior-performing Cooper RS3 tires. The Roush Stage 3 and the Roush 540RH are a fine pair to draw two, indeed, so keep reading to get all the details in the Press Release from Roush.