Wow I really have to say you are a SPEED MANIAC. The gearing and now this! It's okay, I know the feeling, modding gets addicting. My last car, the Eclipse GST in my avatar pic, I spent a whole $2400 just for some stupid, totaly uncomfortable, MOMO race seats with sliding brackets and some 5 point harnesses. Its funny to think I could have saved my money, put down another 2100, and gotten a supercharger for the crossfire...

Why dont you just get one of the superchargers or turbos thats made for xfire and comes with a warranty? I think the Renntech and Startech ones have an actual warranty when installed for the Crossfire, instead of trying to modify something made for the Benz?