Turbo is 5k total for the kit. That is unless you already have things like an APEXi, downpipe, etc as then you deduct that from the price of the kit. Streetflight is the one who is selling it. It was designed in part with Terry Haines. DDavis(Darrel) on these forums (hangs out alot in the southwest forum) has driving in one that had the turbo and said it was FASSSSSSSST! 340hp at the crank or something like that. If I only had 5k laying around.
