My gasket is very tired and has shrunk and the lower corners of the window opening have some rust so I'll be cutting the gasket out to ease the removal of the window. The glass seems to be original as well and I was uncertain about its reuse so when the opportunity to buy a new Sekruit windshield was posted a few years ago I bought one. I've recently bought a new gasket so I'm set for to install the new components when the body is repaired. Someday soon....Glass gets brittle as it ages leading to cracking. The big shop I work with refuses to install old glass.
They want to get paid for work and a cracked windshield means no pay.
Critical to inspect old glass for chips and small cracks on edges if you do a re-install.