I bought a rear bumper, primed, from LMC. It is not as thick of metal as my OEM front bumper. After powder coating, it looked good. After a couple of months it showed bumps where it contacted the bumper brackets. It had formed like plastic. Had to straighten it out, repaint it, and grind down the corners on the brackets. Also spacing it out slightly with washers this time to make sure it doesn't contact the bracket edges.