Can anyone tell me anything about this trans:

Stamped on right rear near pan rail: 9MDM326A
Left side of body: 8663549 right below a square 4-pin connector
Tail: 8642547-2

Thanks!

Anyone?
I can't find info on a 8xxxxxx trans anywhere. It's free for the taking and I need to know before tonight!

All the tranny shops I call say that they'd have to physically SEE it.