This first picture shows the bumper bolts that the RBG bracket attaches to. The passenger side is shown. The top 2 bolts need to be loosened and the center bolt completely removed. (like the picture shows) The 2 bottom bolts are for the tow hitch. So if you don't have a factory hitch you won't have the lower bolts. Those lower bolts will hold the position of the rear bumper while the other bolts are loosened. If you don't have the lower 2 bolts, we'd recommend doing one side at a time to not loose the rear bumper adjustment.