I am on the hunt for a a passenger seat belt for my 89 gray interior convertible. 50resto has a full kit, but I can't get just the one also the buckles don't match my stock ones. I've been on the junk yard hunt for years and ebay doesn't come up with results too often. Any suggestions? I'd be willing to plunk down around 100 clams for an oem replacement with strong retractors, I just don't know where to look.