both of mine were given to my dad (original owner of the truck) when he purchased it. I've got my truck in 10,000 pieces and I haven't found any other ones, so I'm guessing that they weren't actually put into the trucks.
true... I have not had my headliner down, but I've been in every other place on those lists except inside the rear seat cover.... maybe I'll look since it's out of the truck, although I already have two original copies of mine.... good luck finding one