Yes, there are two different size windshields for the 1961-1963 F-85’s. As stated, there is a rubber gasket seal mounted version and a glue in version. They are close in size and I do believe some installers have mixed the two styles. To my knowledge, all Jetfire bodies were supplied with glue in styles from the factory and all convertibles are rubber gasket seal styles. However, I have heard from two Jetfire owners that their windshields are now rubber gasket seal installed. I could not say if they were original or replacements. The difference is that the glue in style is 1/2″ to 3/4″ wider. The stainless steel trim for the two different styles is completely different. Being that the trim is not easy to find, I would suggest that a person stays with what is currently installed. Here is the page from the 1963 Parts Book where Jetfire is not spelled out.