Thanks, guys. I'll do a search for a supplier that sells that product over the net, and see what more info I can get. I may even be able to get it from Interstates Plastics, my polypro supplier in Boise.
I don't know why, but I'm still having troubles with the basic stuff here...I believe that, in one material or another, I can construct the panels that will fit where I need them, but my i-net searches still haven't turned up the type of material that looks right for use on covering panels such as these. Seems to me that I have seen a material, it sticks in my mind that it was foam-backed, that is designed to have an unusual amount of stretch in both axis for conforming to complex contours such as what these might end up like. KK's advice to cover the panels individually makes sense, but there still will be a good deal of out-of-plane covering, and I want to find the best material to do that, and, hopefully, be able to do the covers with adhesives rather than having to sew it at all.
My searches have turned up several suppliers of seat upholstery and carpeting, but not a lot specifically for the headliners, door panels, etc. I agree with KK that one needs consistency throughout, not a hodgepodge of different colors, textures, etc., but the requirements of the panels, the seat covers, and the floor covering are all different, and I'm missing the concept of how those all get "tied together" without using different materials. Sorry guys, I'm not usually this dense, but for some reason I'm missing something here.
I'll do some searching for the Komatex, and anxiously await a response from two excellent resources here...you both do some beautiful work.
Thanks-
tjs