any one know what rear end will fit under a 51 4100 chevy i need to drop it down so it can get into the garage it has 20" inch wheels i found a 56 chevy 1/2 ton front suspention and it bolted right on so i got 6 lug on the front but im wondering if the 56 1/2 ton diff will fit under the back cause usally the springs on the rear are 2" inch on the 4100 they are 2 1/2 inches wide so i dont think that the spring pins will fit into the spring pads on the diff heck i dont even know if its a 4100 or bigger!