JLM,
Regarding the glass, if you have the originals, many glass shops will cut new glass using your old ones for a template. That is one of the benefits of an old truck with flat glass. When you have that done, be sure you get glass of the same thickness as the originals. The windshield and rear cab glass reside in rubber gaskets made for the original thickness. Most people would recommend gaskets made by Steele which you can order from them or some vendors carry Steele products.
Kent