I expected to have some fitting to do, but the spots that are marked for drilling on the diffuser don’t really line up well with the factory spots on the bumper. Had to drill my own holes in the bumper to match up with the holes on the diffuser and I had to add a couple more bolts that go through the diffuser and the bumper to hold it in place. Without these added bolts, the diffuser had a tendency to slip down and not look good at all. Once that was all done, it actually looks pretty good!