Is the windsheeld on my '86 wagon glued in? Or will it pop out of the seal?

It's gluded in and you'll have to cut it out. Once you get the trim off, you can probably rent the tool that will cut through the urethane but most of the time the windshield will not come out in one piece.

yes they are glued in and the best way to get them out is a utility knife and the hood cable just cut one out of a junk car and make sure you take the windsheild out on a warm day

go buy a windshield knife, heat the blade with a propane torch and go at it. Another trick is to take a jig saw and make a sharpened blade for it from an old piece of banding material. Cit it out from inside the car, but be careful not to cut too far and ruin the paint on the outside. After you've removed about 300 of them, they're pretty easy.