Ok, thanks guys. That's a load off my mind. It took me a long time to finally select this rear end from all the ones I found at pull-a-part and the thought of having to start the process over would be a real headache.
I'm a bit nervous about welding some perches back on because I don't want to warp the tube. I guess I'll just go really slow as mentioned and stitch it. Better safe than sorry.