-1" Deavers and mid-perch?

It's been my experience that when you lower the rear of the truck more than about 2" lower than the stock height, the shocks start to "bottom out". They get stiff and compressed and affects the ride. I recommend a 2" drop shackle or the ready lift blocks that give you a smaller block. The stock block is about 3-3 1/2 inches and the ready lift block is about 1 1/2 inches. So you get about an inch and a half drop. Past that, ride gets choppy.

I have talked to some other guys about this and it was their experience too, but to each their own, at least you won't be out much money to try it and go back if you need to.

You don't need shims