Hoping to avoid unwanted attention from law enforcement, I installed my front plate today. I used a 1/8" standard steel drill bit. I predrilled the plastic license plate holder that came with the car. I then positioned the plate holder on the bumper, placed the bit through the predrilled hole, and drilled through the bumper. It went in cleanly. I did notice that there are two distinct surfaces to drill through. On the first attempt, I stopped after I felt the bit go through the bumper. I screwed in the black screw but it stopped before going all the way in. There's a second surface under the bumper that it has to pass through. So, I drilled all the way through, screwed in the screw, and all was fine. I looked under the car for any dripping but saw none.

After affixing the right side, I drilled the left (through two surfaces again), screwed in that screw and affixed the plate. No muss, no fuss. I hated to do it but I want to enjoy my Crossfire without always worrying about getting pulled over for missing a front plate.