The driver's side rear panel of my 1973 coupe is missing the grommet that the seat belt passes through. I thought I found one on ebay. It's tan, but I thought I could paint it blue. When I took out the passenger's side grommet, thinking I could paint them both, I noticed the one I got from ebay is much bigger than the one I already had. Part number of tan one is 62611B90AWA. The blue one does not have a part number molded in. Any inputs?