Hi all, I am currently hotrodding a 1986 El Camino. The 2004r tranny i have is shot and I am looking at a th350 with about 25,000 miles on it since a rebuild. First, does anyone know the market value of a used th350? Second, the guy i am getting it from is getting a 700r4 for his 95 Impala, and he needs the tail shaft off the 350 for on the 700 so it will fit. Will it be possible to use the tail shaft off he 700 on the 350? One more question, what are the overall lenghts of GM trannys, or a source to learn.