Are the markings on original glass stenciled or etched?
I was talking to a Mustang restorer a few years ago and he was boasting how he'd made up a template of original correct markings and then taken the glass to someplace that did some sort of small scale media blasting, and had them etch the correct markings on his glass using his templates. He said it came out great, was cheap to do, and the car ended up winning in OEM judging. I should have taken some notes of exactly what his procedure was.