Both versions of the trans use a special Chevy-style tailshaft housing. It has a Mopar pattern to mount to the main case, but uses a TH350 yoke, seal, and speedo drive. The tailshaft housing is held on with a couple bolts, and a retainer snap ring that must be removed before the tailshaft can come off. A previous owner didn't know about the snap ring and broke out the pry bars, breaking the entire ring land into little pieces that went to the bottom of the housing. Luckily, we had a spare trans for parts.