So I guess it's not clear in ETKA which part this is because it's not a separately listed part. had to quit for the day but I suppose I could make one.
I'm pretty sure it is the slinger. It was hovering around the drain hole when I drained the oil out. The magnetic plug was covered with metal. I stuck my finger in and felt at first what I thought was a piece of gear. It fell out when the bell housing separated from the transmisson.
It looks like the slinger, or rather the remains of it, to me as well. As you saw in ETKA, they don't sell just the slinger. The same part is in every bell housing back into the bay buses, though, and could be tapped out of one and installed in another. You'll want to inspect the input shaft both where it would have contacted the slinger and also at the end where it goes into the pilot bearing in the end of the crankshaft. You'll also want to replace the pilot bearing.
There is rubbing on the input shaft where the slinger would have been, I haven't measured it yet to see if it's truly damaged or just scuffed. The pilot bearing end is a bit rough, but again I haven't measured it. The pilot bearing itself is brand new, as the donor Golf 3 that my engine came from didn't use a pilot bearing.
I'll try to get everything measured up and see what is good and what is bad tomorrow. Wish I knew someone with bell housings laying around. There is fair damage on the inside of the bell housing presumably the original pilot bearing let go at some point and caused this to start.
The Trans code is not correct to the options tag in the truck, as it has been replaced at some point so I don't think I can really know what happened here.