I did a couple of post on this eariler. Do a search if you want to see. I am still considering getting one, but think i will get a turbo system instead. The major road block in the Kenne-Bell units is that it is NOT intercolled. This becomes a problem abore 8-10PSI because you have to start to run higher octane fuel. If you leave it below these settings it is said to be rock sold for the street. If you can be happy in these limits, Get one. Myself, I think I want a little more punch in the end. Try
www.Kenne-bell.net , There is a lot of info here plus more pictures.