I've had a few threads related to this topic, and I've finally taken the first steps toward making it happen. Thanks to Blueoval71 for making a great template of his windshield for me! I started by simulating the roughly 3/8" thick bead of urethane by using some leftover edges I had from some foam floor tiles, then I laid the template in to get a quick idea of how much I have to fill in around the glass. I'm going to use the template to make a thicker version with some 1/4" pressboard to more accurately represent the real glass. Then, it'll be time to start welding in some filler strips.