Who makes a seal for the bottom of a model A windshield? It has to be tappered on both ends and fit pretty good. It's real drafty when cold. A little story about driving when the bugs where bad last year...I was driving home and had to get some fuel. Pulled into the gas station and used some of their windshield stuff on a rag to clean my glass. Got back on the road and ran into some light rain. Friggin' bubbles started comimg out from the bottom of the glass, lots of bubbles. It was like I was on Lawernce Welk. Lesson learned; Always wipe dry a windshield when using that Gas Station solvent.
Look at Snyders. It also helps to buy one of the universal profiles from Soffseal andseal up the frame-overlap area. In a driving rain or just at speed the water can push past just the stock seal.