I am in the process of removing the rear leaf springs and hangers from my 56 in preparation for a 4-link install. The truck is a California truck so the components are rust-free and have little wear...are these hangers worth saving? I removed the rear hangers some time ago when I relocated the spare tire brace when I installed a rear mount gas tank but now I am left with the chore of cutting/drilling rivets on the front hangers. If the fornt hangers aren't worth saving then I won't be so careful about removing them. At some point I will be getting rid of the springs, 9 inch rear end, shocks, disk brakes, and MidFifty "flip kit" lower shock/spring mounts as well.