[chev-obsession]

This trans is listed at an auction house about 30 miles away, I was hoping that you guys could help me identify it before driving over an hour round trip just to look at it closer. I would be buying it as a core, I’m leaning towards a TH400 based on the pan shape and some of the features on the side of the case, but the adapter is throwing me off.

Any ideas what trans this could be? Any info is greatly appreciated.