First of all, I'm seriously pissed at the lack of accomplishment over the weekend regarding my 454 swap. According to me I was already to go Saturday morning. All I had to do was pick up some new motor mounts and a hoist. I know I should be going with poly mounts, but I'm on a budget right now, and besides the 454 is used and it probably won't be the torque monster a built 502 would be. So I got to Auto Zone to pick up the mounts. I know I need big block mounts, not 350 mounts. As I understand, the rubber is denser in the big block mounts. First thing that I notice, the mounting holes on the mounts is different from small block to big block. I think I might have been looking at 2WD big block mounts, not 4WD big block mounts. I took home the big block mounts and suyre enough, the holes on the crossmember brackets don't line up. Is it possible that I need 4WD big block mounts?? What years did 4WD trucks have big blocks??? Or do the motor mount brackets need to be swapped??? I stopped by a wrecking yard yesterday to hopefully see for myself, but all I found were 2WD big block trucks and a couple Blazers which I knew were going to have small blocks. Thanks in advance, as I'm dying to finish this swap. It's not what you buy, it's what you build!