>I find this hard to believe. First of all, glass is not a laminate, >like say, Formica. Is it? I have to wonder now. So I don't see how it >can "delaminate" if it's not of laminated construction. Second, it >appears to me that the glass simply sews into place. Third, I have a >perfect rear window, and it's original. I don't see the point in >chucking it out. I don't have any experience with Imperial converts, but I do have a '76 Caddy Eldo convertible. The rear glass on my Eldo is actually glued to the top with some kind of super strength adhesive. I wonder if your top man is commenting that it'll be impossible to "unglue" the glass from the old apron, then properly reattach to the new top? After smashing the rear glass with a folding chair that shifted positions in the trunk, I examined this subject VERY carefully... could I perhaps just glue a piece of lexan in place of the old window? Could I find an old rear window in a junk yard and glue it in place? After much careful consideration I decided that it wasn't possible (for me) to do a quality replacement job on my own. After investigating further I discovered that my rear glass actually lives on a separate apron that's attached to the main glass via a zipper at the top, and riveted to the rear glass support links on each side. The point being that the top could be replaced, and the old glass/apron assembly could be reused if replacing the top. This of course meant that I could replace just the apron and glass without having to replace the entire top assy. Again, please note that I was working with a Caddy. Imperials are certainly somewhat different in design, but the basic concept may be similar. Best of luck, DD