I pulled the pan and the valve-body is now hanging by the parking rod (unbolted it, it was all tight when I openned it up), everything inside looks good (bands, drums) visually so I am thinking that what was stated, that the rear sprag (same as overruning clutch right?) went, seems likely. Going to pull fully and begin disassembly. Have a good used case being lined up as well as bolt in sprag. Should I go for an "ultimate" sprag, 16 roller, or a 12 roller bolt in should be good with my power level (575 hp with nitrous)? Thanks for any help guys.

P.S. LOTS of metal in the pan.