You could have a windshield expert come to your home and remove the windshield for you (maybe cost from 50 to 100). Clean and rust bind the rusty areas and apply high quality paint, then have the tech come back and install the windshild.

If your windshield is pitted it might be a good time to replace it.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.