I have glass doors on my 70'.

If you mount them with lightweight removable mounts, a tubular window mount with Lexan windows and a race style door latch, you will save a considerable amount over 2 stock doors with all the factory hardware and glass. I didn't weigh the difference, but it isn't close when picking them up.

Plus, with glass doors you can pop em' off in 2 seconds when working on the car. Call Glasstek. Their stuff is excellent and I think doors are still under 700 for the pair.