Pulled out of a mid-late 80s wagon that still ran (and drove). Dual bolt pattern bellhousing (Chevy and Buick, Olds, Pontiac). Complete rebuild kit (new) comes with it. Torque converter included (used). Was going to rebuild to put in my '57 (same dimensions as the TH350, bolts right in without having to change the driveshaft) but ran out of time.

$350.
These can be built to handle over 500 hp and the gear ratios are better than the 700, closer ratios.