yes, it will swap over, one thing to look at is the rear end leaf springs. I have bought a 1/2 ton truck before with 56" rear leaf springs, and i believe most 1/2 ton trucks and blazers use 52" springs stock, so as long as the springs are 52" on both trucks, the'll swap. Also, the truck mounts the shocks different then the blazer, but it should still work if your using the stock axles. If your using the axles from the 1/2 ton truck also, then a shock mount needs to be either relocated, or a new one welded on.