Yeah, not much here for converter shops.
I agree the surface rust concerned me first. It was stored in a shed and likely got damp from time to time as often happens sitting for more than 20 years. The rust is only really on the flex plate side, the area protected by the bellhousing is fine. Inside is clean fluid. It came from a very reputable collector.
All that said, I’d prefer a new or restalled converter. We were trying, but couldn’t remember the B.C. Business recently, that’s who most locals use.
Thanks for the number.