2006 Ford mustang roush stage 1 horsepower Source Source Source Source Source Source Source Source Source Source Read Also: 2013 Ford mustang roush stage 3 price 2006 Ford mustang gt roush stage 3 1 2006 Ford mustang roush stage 2006 Ford mustang gt roush stage 2 2006 Ford mustang roush stage 2 2006 Ford mustang roush stage 2 specs