i'm not going to say it cant be done but the chances of you (or anyone) getting an original windshield out without busting it is like 98-2
98% chance its gonna crack

I never pulled a windshield in my life, pulled the original one out of my 81, no probs, no cracks. Easy as pie. Cut seal all araound with razor blade, pulled out pieces with screwdriver, then tapped it with flat o my hand all the way around, it eventually came out. Dunno, maybe here in cali they come out easy. I got the windshield still if u need one