I glued one in a 78 hatch a couple years back. It turned out pretty good and still looks at good as the day I did it. In my opinion, it is the rear you need to worry about gluing. Since my car was a hatch, it was not a problem in the rear. Had the car been a sedan, it would have been a different story and I would have pulled the back window glued it around the seam like the factory. I had a glued in headliner in my 67 Mustang years ago. It looked good till the first real hot day with the windows down. The pressure from the air would pull it back from the back window when the glue became tacky from the heat. Needless to say I replaced it and pulled both windows and have not had a problem since.