Yeah I don't think it'll just bolt up, but I think if I use the ring, pinion and diff or some shit like that I can do it. I just need some real facts from someone. I mean I have a full GSR tranny so I'm willing to take whatever from it to turn the LS tranny into a GSR. Alot of the GSR tranny parts are bat too so that's why I'm doing this. The parts I may need I don't think are bad cause my friend/tuner opened it in front of me and showed me most of the shit that was bad. I don't trust doing this vise versa-(good LS parts in bad GSR) I think it'll work out better with the GSR parts in the LS cause the GSR has some unknown problems. It gave me alot of problems when in my car.