One of the things you are wondering about is a gasket but I can't tell which it is because it's folded up in a bag. If you lay it out and take a picture I can try. If it's a door one it will have an oval loop on one side. They are different between the front doors and back doors. Each front door gasket has six holes back door gaskets have five.

I know this is not a for sale thread but can you think about selling me rear seatbelts? The black part where they attach to the body on mine are rusted. In that same box is the black bar and plastic thing that attaches the front seats to the body. I would be interested in the one for the passenger seat. Thanks!