Rear window only requires a glass installation kit available at most any glass or body supply shop so no worries on that.
Front does require the rubber gasket that is very hard to find right now.
Unfortunately I just sold the last one I had here on Moparts earlier this week. I have a call in to a supllier that I got a few from 2 weeks ago and am hoping that they can find me some more in their system in the coming week. If some become available, I will post it here but I wouldn't hold my breath, I need one for a 71 Demon myself and can't find one of those either right now....
Mark