Welcome to the bird's nest! May I suggest that you go to the intro section and introduce yourself and tell us about your car. What kind of shape is your car in? Have you tried looking for a build sheet. That will help you find the answers you are looking for. The most common place for this is under the rear seat cushion, or seat back. It could also be on top of the glove box, and maybe even behind the rear cover of one of the front seat backs. If I read my book correctly the 1X is most likely for a vinyl roof, the 7X is the longitudinal stripe. The R4 is body color, Bright red, M2X is for trim, M, medium, 2, bench vinyl, color black. X9 upper door color, black. If I'm wrong I'm sure that the guys will correct me.