My series 7 has upper lexan window and lower non window door skins. I would like to replace with all lexan window skins. Can this be done with one piece or do I need to use two pieces?

I would like to avoid the very expensive bubble doors if possible.

Also, I probably need to keep the the old skins for templates. Can I re-attach the new lexan with less rivets? Sure looks like they get attached with less rivets in photos that I have seen.

Additionally, do the skins get drilled/riveted while the door is hung/latched in position?

Any thoughts and info on new door skins (windows) appreciated.