It looks to be about 1/2" but I think if i adjust it to the right about 3/16' it might fit better. There is a '37 in town parked at an old smog shop and I stopped and looked at it and the gap is much smaller maybe 1/8". But the seal is original and I'm sure has shrunk over the years. We are going back east for a few weeks, so won't have time to do anything until we get back sometime in Nov. I'm not sure what you are asking in the second part of your post. It is an aftermarket frame and has the glass in it, but when I laid the new over the old frame they measured the same size. I will repost after i get it adjusted. I have a couple of Fisher body books for the early to mid '30's but they only cover passenger cars and have very little on the windshield installation and what the gap's should be. I will take a couple of pictures with the windshield closed before I adjust anything and post them when we get back.
