I would go with a turbo safer and get more power. I have a single turbo and puts out 500hp 525tq with 7psi with 91 pump gas. I dont think you will get that with a super charger and a turbo you get better gas miliage and they are the same price as a supercharger. If you have a methnol injection the turno will put out 550hp 560tq to the rear wheels on 8psi on 91 pump gas.