YES I am using 1/4" TEMPERED GLASS.
I finally was able to work this evening again on the cab, I finished up my "skinning" around the cowl and fender areas, I will be putting the cab back on the tractor tommorow to do some final tweaking, then take it back off and do shoot it with self etching primer, some bondo work then I will be ready to paint.
After I get the cab in paint I will start the roof fabrication, I will be using wood for the frame and roof and it will all then be encapsulated in fiberglass.
I will post pics tommorow.
-Mike