Seriously dont go with the GSX motor, its garbage. The Gallo 22 (Serial number - 398GVDTYPE) which is a beefed up version of the GSX 4G63 is much more worth it and has a universial kit to bolt it up to almost any transmission. My buddy has this motor bolted up to a Tremec and that shifts like a dream. Pushes 31psi daily driven, not one problem at all, sounds like an 18 wheeler !! I think his screen name on here is Bleach. Dude doesnt know too much but he can get you in touch with the right people.