First off I would install the moldings after the car is painted so the lower part of the car gets paint coverage, I am sure your paint shop will tell you the same thing. The installation of the fender, qtr. and door moldings are installed with metal t-bolt type fasteners that nut on the back of the panels. The rocker moldings have a retaining strip that is pop riveted to the upper edge of the rocker panel and the molding slips over the lip and the bottom of the molding is secured by screws. I don't believe the rocker retaining strip is being reproduced yet and are getting hard to find, so I hope you have this strip as the rocker molding will not go on without it.