I havent done the swap myself, I've just heard from other people that swapped out their SH trannies, so I'm not exactly sure about the bolt patterns. There are several items needed to make the swap, but I'm not sure where you can find the exact instructions to do so. I'm saving up for my turbo kit so I'm not ready to make the conversion yet, but you can still turbo charge your SH without changing trannies, you just wont be able to run big boost.