I am restoring a 1984 k-5 and can’t seem to locate an interior panel. The panel is just below the front of the back seat (bench). For description purposes, it would be located directly behind the heel of a person sitting on the back seat. It’s a plastic or rubber panel that runs lengthwise across the truck. It looks to be a carpet panel. It make a semi-circle to conform to the hump that runs down the center of the truck. I am sure it got misplaced years ago when I had the carpet replaced.Thanks for your efforts.