I've glued the frame in a glass coupe before with that urethane that Bob mentioned - and it did not adhere very well. Turns out they make two types of urethane adhesive....one that requires a primer, and primer-less. I had used the primer-required type. After I spoke to a guy that installs w/s in late model cars - he gave me a small bottle of the primer, and I reinstalled the frame with no problem.

So I'd say to be sure and try to get the primer-less....something to watch for.