Did i damage my 727

So I dropped the tranny and was able to get my hands on a bone stock rebuilt just to at least have something in while I rebuild the old one, oh my god that was the first time I was able to take it for ride....it rides so amazing and runs great. Only think I worried about is my header touching my torsion bar now but it drives so good and has so much torque I need to get used to it first. I am going to rebuild that tranny once i open it up and what would be a solid rebuild set up? Also is a bolt in sprag a must?