2. In order to get the rocker guards as close to the underside of the cab as possible, we had to notch the lower pinch-seam of the cab about 11/4 inches. This way, the ShrockBar mounting pads for the guards could be welded up higher on the framerail. These are simple cuts and can be made with a die grinder in just a few minutes. Believe it or not, this small amount of space makes a big difference in ground clearance.