It does sort of screw up readimade bumpers and sliders. But if you are making your own this is a real advantage, because your mounts can go straight off the frame and clear the underside of the body. For the home fabricator this makes it a lot easier. Someday, I'll be doing a body lift on my 80. I can clear my 315s with just the Js. When I go to 36/37s when the 80 goes away from a dual purpose vehicle then I'll do a body lift so my suspension mods don't have to be redone. If you do a minimum lift <2 inches it will take a trained eye to notice if you aren't running factory bumpers. I imagine if you go more than that your ARB will start to have headlight problems.