There is a learning curve on 37/39 windshields - first- if you have the split in the center, on both sides, you have a 37 or early 38. If the split is about 1/4 of the way from the bottom on both sides you have a late 38 or 39. They will both fit all 3 years. They are all put together with about 4 inch flat stock that is drilled and tapped for the screws that hold every thing together. After 75 years, all or some of these screws will snap off, unless these parts/pieces have been redone recently. It usually takes drilling, tapping and a solvent to seperate everything. 37 early 38 standards were painted body color. All other 37/38/39 were plated. The inside frame was painted flat black. the reason was to cut glare . If you attack this and dedicate the time to do this project correctly, you will be very happy with the results !