Do not follow the instructions. They say to install the brackets between the frame and the bumper brackets and they will not fit there. Even if they did fit it would make them over an inch too narrow to bolt the bar to. They will only fit on the outside of the frame and then you have to cut the frame a bit to gain clearance. I'm lucky to have a plasma cutter but you could use a cutoff wheel on a grinder. They are very heavy duty brackets that hold up an exhaust tubing bar. Easier to make them.