replacing door window on 1972 dart?

I can tell you what I know about it... The vent window frame, door glass, and all goes out/in together.
The forward glass guide kit will cost about 55 bucks. I wouldn't reinstall used.
The little plastic fastener that attaches the bottom of the glass to the regulators saddle often breaks at removal. Aftermarket sells a replacement but a simple 1/4-20X1" bolt with a nyloc nut and piece of fuel hose as isolator works just a good.