The new shackle mount is 5 inches farther back than the original on the frame and mounts directly under the body mount. We placed an Energy Suspension bushing into the 1 3/4-inch hole and ran a 9/16-inch bolt through the shackle and bushing. Once together, we found that the front axle was moved forward about 1 1/2 inches. And though a longer wheelbase is usually a benefit, it might create some steering linkage and sway bar issues, depending on whatcha got under your rig. In our case, the crossover steering was not an issue, and we had no sway bar to deal with.