I know this guy had a link that was posted before but I think it bears posting again. I called them back in November and talked to the old man who owns the shop. He's upholstery now but did conversions in the 70's and 80's. He has a lot of NOS parts but doesn't know what he has because there's so much.
No bubble windows or things like that, but it is more of "come over and dig through this stuff because I have so much". I get the feeling he wants to retire and his son, who posts the ads, doesn't want to keep the family business going.
I was going to meet with him in early December but my trip was cancelled. I think there might be some deals to be had here. Someone in the area might be able to score pretty well.