LSx Valiant Build. Take a look inside...

do you remember year/model/motor it came in?

I looked into it and saw a an 82 AMC Eagle 2.4 with a 904, but didn't see anything on there for it.

are the bell housings swappable?
http://www.carparts.com/results/?N=0&Nr=AND(universal:0)&PN=0+7514&VN=4294959959+4294966030+4294961449+4294967027+4294966772&universal=0
Bells are made on the tranny. Amc spirit, concord, some postal jeeps 2 wheel drive, etc. early to mid 80's with a 2.5 then have the 904 built. No different than all the Chinese 451's and other mopar builds and swaps. Keep it mopar..... Yea,lol. Most built mopars out there are 1/4 or more Chinese. LS and mopar,,, good swap imo.