I have a 92 silverado 4x2. It's currently 5 lug all the way around disc in front drum in rear. Buying a new posi rear end with disc brake out of a 01-05 silverado and updating the front as well to match. I'm going from a 4.3 mounted to 700r4 and I'm putting in the ls3 mounted to a ford tremec 5 speed. I have considered finding a 01-02 camaro as 6 speed but decided to go the other route since the 5 speed transmission is cheaper.