That's awesome Sweatybetty! So you glued it along the back window at the top, right where it hooks into those hooks? Or did you glue it just before the hooks on that flat piece of metal back there?
I had a guy do my headliner a few years ago with the glass in, but I'm convinced you can't it that way. The back part has always fallen down. I glued it, pulled it, and eventually screwed a piece of trim up into the sheetmetal to hold it, which now holds it but doesn't look the best. I will eventually do the headliner again.
Thanks for the photos!