So, another update, 3 weeks later.
I finally had the time to pull the exhaust all the way off. It's beyond toast. The rear header was...shattered. But, more importantly, BOTH of the mounts, the one on top of the starter, AND the one below the transmission filler, were broke. Pics included. Getting a new one for the starter shouldn't be that hard, but what do I do about the one on the side? I stared at it for about an hour and I just cannot see a way of getting that busted bracket off without taking the oil fill spout off, and that thing looks either integral to the trans case or the oil pan itself. Yeah, I can see the bolts, but it looks like a ton of dissassembly.
More importantly, the rear head looks a bit cooked. And can i leave it like that, uncovered, or should I put something over/in the ports until i can get new parts?
Short version, just how much trouble am I in?