Update on the turbo: I talked to my boy Martin that I got it from ( he lives in Texas) and he had it custom built. He got the Cheetah series 62-1 turbo wheel from turbonetics as well as the intake side and the Garrett side was from his original 60-1 turbo hot side. The turbo has been tweaked and the wheel clipped, So yes I do think that this turbo could produce close ro 650HP.