Jim,do you have the small plastic covers that go on the buckle part.
As far as I know, he only way to get those is to find a NOS set for sale, somewhere.
I have both covers (broken), from my wagon. One came in the glove box, with a broken clip and other one fell off a short time later. This is one of those pieces to make via 3D printer, then to send to someone for mass reproduction - but I doubt someone will.
Kinda like the coupe upper seat belt loop that is always broken (or missing).
BudW