The Stovebolt Site Forums The Shop Area Interiors Headliner from Hades, 1954 3600

I've been a believer in Formica for a good while now. I've also come to believe some of the gaps/shrinkage are caused by lack of insulation. Originally there was a piece of insulation which was a nasty tar/fiber mixture applied across the top of the cab. Sun, heat, time generally reduced that stuff to more garbage than it was to begin with and I'd be surprised if any of it still exists in original form and thickness. It was about 5/16 or 3/8" thick and if it isn't there, the center bow goes up to hit the roof metal unless something like it replaced it...meaning it now has a different arc. The headliner panels will by nature follow that bow, and I think that's what makes some (if not all) of the difference.