It's not an issue if you're going with an aftermarket 4-link/panhard, etc. setup since you'll be welding brackets on. They came under ZR2 S10s/Blazers I'm pretty sure. You'd be better off with a late model B-Body 8.5 because it already has upper/lower arm mounts, and either use heims or modify the rear upper arm mounts on the frame for the B-Body uppers, they're at a different angle if I remember right.