From 1963-1987, chevrolet trucks used the basically the same suspension. In 1971, chevrolet switched to five lugs and disc brakes. To do the swap, you only need the rotors, calipers, spindles and new ball joints and everything will simply bolt in place. adding power steering is just as easy, and don't go buying on of those seventy dollar adapter plates either, just use some spacers to set the power box away from the frame. I don't think any other swap could be easier.
