The problem with the rear shocks on the 1/2 ton 4x4 and 3/4 ton 4x4 trucks, is the hole size. These shocks have a 3/4" i.d. mounting eye on the top & bottom and not many shocks are currently offered, in this configuration with the proper compressed length and travel. Here is what I use and the price is great:
AC-Delco rear shocks for 4x4
