[hugger6933]

the 5 lug stuff will not fit your 8 lug A arms. You could find a C-10 donor like thousands have done and use the front suspension for a disc brake swap although the front crossmember should be the same for C10 and C-20. And to answer another of your questions all 71 and 72's will be disc brake trucks. A change to 1/2 ton [5 lug ] would help the truck tons in the ride department but your still young you can take a beating and like it during a drive. Good luck to you hope you r riding soon. Jim