Try to be realistic about how you want to drive your car. Some people think they can turn their dailey driver into some sort of race car when in reality it really isn't that. In my opinion, if you want to make your car a pretty damn fast street car, then just buy a bolt on greddy turbo kit instead of having a totally custom made kit. Also, be realistic about how much hp you want. In most cases, the more horse power and torque the more problems you're going to have.

The Jackson Racing supercharger is a good alternative too. Look into that and then decide for your self.