I had studs welded to the sides of the car so the back part of the side skirt could be attached to them...therefor not having to use only a few screws along the door sill and rear fender......the skirt is extermely solid and since i just had them molded on they are not coming off....The shop i took it to said they did not recomend using 3m tape due to the little amount of serface are that the tape could grip onto...I will have new pictures posted shortly of my kit (front bumper) modifactions...interior modifaction and exhaust mods.