No, it does not scratch the glass, it is super fine steel wool. If anything, it will polish the glass. I use a 0000 steel wool pad and glass cleaner to clean all my auto glass. Seriously, been doing it for many years.
Back around 1980, when I first got my 65 Fury, my neighbor had a 76 Dart. We were goofing around one day and discovered his trunk key would open my trunk-they had exactly the same cut on them. It was weird, but true.
I once put a 66 fender on a 65 and it was the same except for the trim holes. The side trim was different between the two cars.
FWIT, I took a fender from a 65 4 door (Fury III) and put it on a 66 Sport Fury (2 dr).