Does anyone know where I can get the fill-in for the 'Thunderbird SC' and 'SC' lettering that is embossed into the rear and front bumpers?

I know many years ago I ordered decals from somewhere, but, do not recall from who / where. I also remember seeing a chrome / mirror-like finish type kind, made from some sort of metal I believe, that used 3M tape to stick to the bumpers. Again, many years ago as well.

Any leads to someone / somewhere for this type of thing is appreciated.