As far as I can recall, the full-width, below-dash shelf found in small AMCs of the 70s and 80s was always bare, molded plastic, with and without AC vents added. But on the underside, it never had insulation of any kind, right? I mean, what purpose could it serve to attach carpet padding to the bottom, flat area of the shelf? See the photo of my car's dash at: http://photos.groups.yahoo.com/group/baadassgremlins/lst?.dir=/73HornetX I've asked the original owner about it...no reply yet. Any thoughts? John W Rosa http://www.javelinamx.com