65 dart rear windshield

You can apply the sealer last. Just stick the end of the tube point under the seal and go all the way around when you're done.

Now, about how to install the glass. I agree, I see no lock strip. Install the gasket on the glass. Make SURE you get it on the right way AND in the right spot. Then take a 1/4 nylon rope and start it in the groove the pinch weld goes into starting in the center at the bottom, leaving at least a couple of feet out of the groove so you'll have something to pull on. Wrap the rope all the way around the gasket into the groove and leave about the same amount sticking out when you get it around meeting the first piece you stuck in the groove. Now get a bottle of dishwashing detergent and dump on the rope in the groove all the way around. Next....making SURE both ends of the rope not only stay IN the groove AND put them INSIDE the car at the same time, gently place the glass and gasket down on top of the bottom pinch weld and make sure the pinch weld is in the groove all the way across the bottom. Finally, get inside the car and with a friend outside GENTLY pushing on the window starting at the bottom, Start pulling the rope out at a 90 degree angle to the glass so the rope pulls the seal lip over the inside of the pinch weld, as your friend is following along pushing the glass from the outside as you go. The detergent is very important. Failure to do that means you WILL tear the gasket. Don't worry about the mess. Continue all the way around SLOWLY until you have the entire lip of the gasket inside the pinch weld. Once you do that, the rope should be out and the glass installed. Finally, rinse it off good from the outside getting the detergent out of the groove and let it sit and dry a few days before you put any sealer on it. I still have yet to put sealer on Vixen's back glass, but it'snot leaking a drop. Sometimes they do and some times they don't seal without some sealer. It all depends on the quality of the gasket. IF you put sealer on it, I would just put sealer between the gasket and pinch weld around the outside of the gasket. So far, I've never needed to put sealer between the glass and gasket and I've done a LOT of them through the years.