Darryl, Guys,
Just thinking, do the buttons with the GM logo have the raised 3D effect with lettering as per original, or is it more of a label or flat insert?
https://www.ebay.com/itm/110645422238?hash=item19c2fb289e:g:8vMAAMXQBNlRiIj1I wonder if any of those textured black cover plates can be popped off easily, or if they match the brushed chrome GM version. While they don't look too bad, they really only suit black belts and look out of place completely on others. If they came of by flexing those end tabs, they could be maybe swapped, repainted to match interior, retrimmed in vinyl etc, sanded smooth and chromed! etc.
I see guys like Inline Tube offer a small range of repro parts, someone had the chrome covers but can't see them at present. The GM buttons come and go, wouldn't want to pull a buckle apart anyway, especially one unlikely to match components.
And there's an endless supply of used buckles and belts that at least are partially decent in chrome or button if you cut the webbing away and use for parts. I even have my own mint condition deluxe chrome set, just no legally tagged webbing that complies locally. Pity I can't take a photo of correct compliance tags and supply at time required, even if not mine! Because with all the sleeves and covers they'd largely be inaccessible anyway, or I'd make sure of it......ahem.