Hank,
No the bell housing is an odd ball. Its not an expensive part to buy new from GM. Get an '02 up 4L60E out of a full size truck and change the bellhousing - good to go.
No Idea what was in the wagon.. my guess was a th400 with the power they were making - even if the wagon weighted 2900# they were making insane power - I think it went like 155mph.
I wish Cunningham would open up a bit about that car.
