3. The top of the air dams have a slotted hole. I like making sure that I start out with it centered on the bolt. Moving these air dams, with their bottom bolts being the pivot, can raise or lower the front of your fenders and can also close or open up the line between the fenders and hood. Once you are satisfied with the fit and are ready to blow it apart for paint, drill a couple of small 1⁄8-inch alignment holes through the air dams, top and bottom, and into the radiator mount. When you reassemble, use a small scribe and alignment tool. Having these back in the original place when you fit the hood can save you hours of readjustment.