are you trying to keep it stock? if you are just rebuild the motor. if not the sky is the limit! or rather your wallet. seems to me going to 5-lug will give you "unlimited" rearend ratio's, staying with 6-lug and finding a rearend the correct width severely limits the choices. overdrive or t-5 are good choices. keep asking questions and get familiar with the "search fuction". good luck!
