I have a 350 turbo trans. with a shift kit and a 288 cam. and i was told by one person in need a stall and another person a 400 torque converter, i think the cam. is to much for my truck. It has a 1975 350 in it. What should i put in it the stall or the 400, why and what is the diff. between the the 2 becasue a stall is a torque converter too right?