Well, the Chevelle is D.O.A.....

[markjohnson]

I've seen where a bad (cracked) transmission tailshaft caused a similar disaster to this. Fella knew it was cracked but just figured he could live with the small drip leak and everything would be fine. Unfortunately, there's nothing left of Eric's to analyze but I do see the bushing from it slid down on the front yoke. One other thing that comes to mind is if that 12 bolt still has a crush sleeve in it or not. If the front pinion seal ever needed changed (or the pinion yoke was ever replaced/upgraded) and the proper torque/crush was not put back on that pinion nut, bad things can happen. Just throwing these out there as food for thought, Eric. We all know you're a pretty handy guy!