I dont recall the size for front shock but you can purchase through our vendors. Classic Parts catalog, pg 75. LMC has as well. Cant help with 3/4 ton rear. Could use better picture to see how bad the bracket is hacked up.
~ HB 1966 Chevrolet K-10 | Ghost: formerly Flappy Fenders | In the Stovebolt Gallery 1962 Chevrolet C10 1962 Suburban