I think your chances of ever finding out what they really fit would be slim to none. I bought an old windshield frame off of Ebay that I used on my T, and I have never been able to find out what it came off of. People can identify fenders, bodies, and that kind of stuff, but windshields would be a long shot.

Maybe in Hemmings or on line you can find a glass supplier who deals in restorations of cars in that era, and they might be able to tell you.

When I took my windshield to have tinted safety plate in it the guy told me that old non safety rated glass is an accident waiting to happen, when it breaks lots of sharp spears are created.

Don