A once large mustangs parts seller here in CT (MU) is selling off what's left of its inventory with big discounts. I am always finding and working on mustang projects and saw that they had clear rear fastback glass for 67/68's and was thinking of getting a couple. Some projects I don't care about originality so basic functional repops work. I know repro glass, even if they are marked with original style factory markings, are usually thinner. What I can't seem to remember is about the visual "seam" down the middle that stretches from the center of the deck lid up to the roof. Is that seam/ peak or whatever it's called present on all factory 67's and 68's? The repro glass doesn't have it.