63 stick, the backer is not screwed on first, The vinyl is glued on leaving the bottom edge free to be glued to the body wrapping around window frame and glued flat rearward of rear window. The 4 clips are for the piece over door, only one on piece over rear window. You can use 1/8" plywood to make new backerboards, I had to make new panels for entire car. Take note of slotted holes holding clips. I had the same problem with the heater box wellnut, a threaded insert in a rubber bushing, once I had it out I took a 1"×2" piece of sheet metal drilled a hole in it and welded a 1/4-20 nut to it, stuck the nut through existing hole from backside and pop rivited the plate in place.