First off, this seems like a pretty helpful site especially for stuff I'm not super familiar with. So just another newb but I hope to keep learning more on here. But here's my latest issue.

I've searched my ass off for the last couple weeks and can't find anything. I've got a 2001 2wd 1500, tranny was junk when I bought it and I had a 4.3 out of a 2001 s10 that I know is good in my garage. I've had people tell me it will bolt right up, and then other people tell me that I had to change bell housing and torque convertor. Can anybody confirm what I have to do? I'm losing my mind. Thanks in advance.