I got the car back from the rebuilder yesterday. It's doing great. (I had to wait for the money.)
He told me that the metal in the pan was pieces of the planetary gears. He also changed the cooling lines and said that I was darn lucky that the rubber lines that were on there didn't burst under pressure. They were just light weight fuel lines that the PO had on there.
Heck, I'd been driving the car across country at highway speeds (okay, maybe a little faster, like 110mph sometimes lol), and I didn't even know that they were ready to pop!
He did the whole job, tow, remove, replace and reinstall for under $600, so I figure that I came out pretty good on that one.
The C6 in the truck is next!