Damn, that is some carnage. Yeah, like Greg said you will have the same problem if you still have that shimmy during acceleration w/ anything you put back under her. I remember when my brother completly blew apart his tailshaft on his TH350 when he had a vibration on his truck under accel. at about 80 or so. One day coming home he decided to push it well over 80 ( 110 or so ) and then BOOOOMM!!! had to go pull him in. The guy rebuilding it for us said he had never seen someone blow the tailshaft completly off before and to this day hadn't seen another like it. That was 10 years ago. Also it looks like you paid for 5 pinion but only got 4. I'd be pissed ...Zed