Has anyone used one of these kits? I have a 67 coupe. I just got mine yesterday and there are 12 pieces. The package says 67-68 coupe. The description online says 5 pieces. I have 4 that I have no idea where they go. 2 are shaped like the letter D and the other 2 have a contour sewn into them. I imagine these cover the taillights or something because they are still left open, but I just cant figure it out. If anyone has pictures or can explain it that would be great.