Lorenz provides an add-on leaf pack that replaces the factory overload leaf. The leaf pack lets the leaf spring flex much more easily than the overload leaf did, but still provides enough arch and spring to raise the vehicle 1 5/16 inches (by our measurements). To do this job, you'll need some C-clamps, a hammer, a big punch, and some gloves. There are two center pins in these leaf packs, so it'll be a little tricky trying to line up both center pins through all the leaves. We used C-clamps to squeeze the leaves together, and a punch to line up the center pin holes in each leaf. The hammer can be used to move an individual leaf if the C-clamp already is squeezing the leaf pack.