When I replaced the headliner on my 87 GN I was able to remove the old factory material from the backing board without damaging it because the glue was so deteriorated. It's the gray cloth and is about as thick as T shirt material with no foam backing. It is really nice with no stains or rips as this was a super nice garage kept 49K original mile car that it came out of. There is no hole cut out for the front reading lamp option as my car didn't have it. Just has holes for the visor arms, dome lamp, and screw holes for the grab handles in the back. I have no idea if it can be reused but I don't see why not if you know what you are doing.
Feel free to make me an offer.
Feel free to make me an offer.