RE: 3/4 ton springs in a 1/2 ton
I put 3500 4x4 Diesel springs in my stock 1/2 ton and it gave me 3 1/4 inches of lift in the front. The ride is a little more harsh, but hey, its a truck, not a lexus! ha ha. I needed a coil spring compressor to get the heavier springs in. They fit perfect in the 1/2 ton mounting locations though. The diesel or v10 springs will give you more lift than than the v8 springs. Hope that helps you any!