When I went to fix my door slamming problem by adding the bushing to the door pins, I found a storage tray mounted behind the seat. It seems to be original to the truck and made of some cardboard-like material. It is very brittle, I assume from baking in the NC sun for 44 years, but it fits so well that I think it came from the factory. Does anyone else have one of these or know anything about it? I will upload pics this afternoon if not.