I have a set of Lexan side windows (drivers door and passenger door window) from my pulling truck for sale (used one season). Nothing wrong with them at all. $200 plus shipping
duramax86, I went to a local glass window place and had them made. I had to trace the dimensions I wanted onto the lexan and had to buy a full sheet of it since they don't normally carry it.
they fit factory tracks. I had the bottoms of the lexan cut a little long and I just put two bolts thru the bottom edge into the inner door structure. That allowed me to remove the entire inner door and window mechanisms. They fit the tracks just like stock so you should be able to clamp them to the factory parts and run them up and down if you wanted to.