Is possible to come to conclusion what is original to 69 CJ not SCJ in respect to being considered correct--so far some of the biggest names in restoration have somewhat different version and to me everyone is right. Some feel that all automatic big block had tapered shaft, while others feel that only SCJ had tapered and than is me that only get headache out of it, and will gladly comply with what ever you specialist feel is correct, and than of course does anyone has one for sale. yours truly John Zajc---please help me from going insane--thanks