[mdross1]

With that much engine you could run 4 or 5 speed.My car started out with a 460 ci,TopLoader 4 speed, and a 3:54 rear.Except for highway driving it worked quite well.Now have a little more hp, Tremec TKO 5 speed,and 3:73 rear.Amazing difference,out of the hole and much faster highway cruising.