The 12A's and the 13B's will all bolt up to the 75 tranny. Just be carefull if you decide to use a 13B turbo, the flywheel is different and will require a different tranny and starter. I have a 12A in one of my trucks right now until I get the new engine built. Even the newer 13B fuel injected engines will fit. Good luck and post some pics on the MSN website.
____________
74 REPU "Red"
74 REPU "Jethro" "TII"
74 RE-Courier vert
79 SA-SE(aka deathtrap)
79 SA-SE-FC (project
turbo)
http://home.bellsouth.net
/p/PWP-crgj
TN Forum:
http://tnrotary.10.forume
r.com/