I just had to use wax and tar remover on the plastic to clean it up. I have been using the VHT Epoxy Satin spray paint on the plastic parts and underneath the car. The bumper fillers lined up fairly well without having to make the holes too large. I also used rubber washers on the top end of the bolts to eliminate some of the stiffness and give them a little play if needed. If I ever get to paint them, they should look okay.