We wanted at least one more inch of lift to clear the tires a little better, but we didn't want to change out the fancy Deaver leaf packs, and elongating the shackle anymore was really going to throw the pinion angle further out of whack. Offroad Design (ORD) makes something called a zero-rate add-a-leaf. It's not really an add-a-leaf, but it's not really a block either. Each one ties into the springpack using a supplied centerpin, so you can even use these in the front end (never use a conventional block in the front of a truck!). You'll also notice two extra holes in the zero-rate add-a-leafs. The extra bolts and holes are used so you can move your axle either 0.75 or 1 inch frontwards or backwards, effectively and cheaply changing your wheelbase.