18 spline A body 4 speed
Well, I have only converted one Mopar to manual, and I can say Brewers was awesome. The parts, the knowledge, someone to talk to on the phone.
I have not dealt with Passon, however, reading 'mixed' reviews made the decision who to deal with pretty easy.
I could be wrong, but i have never seen anyone from Passon take time out of their day to post here and help people.
Brewers was even helpful on a bellhousing that he does NOT sell (Lakewood, its obvious why he does not sell it when you get it).
This thread response is NOT a paid promotion, in whole, or in part, from Brewers :D