I posted in my intro thread. I dont have a sy/ty. I have a 92 bravada. I think the drive train minus the motor is the same. I want to put a V8 in it. I'm just a little worried about the trans. This is kinda a low buck project. So I was wondering if a th350 will work in place of the 700. Something else I was just wondering about. Do the sy/ty's not come with the 8.5 rears? I've seen some pics and they just didnt look like 8.5's. Thanks for any help.