[Gunner]

Colors are a bit bright. I'd go with more muted red and blue - a maroon and darker Ford blue. Maybe even a buff or ivory background. You don't want these to stand out like racer decals.

Look into casting as well as machining. Shops that turn out medals, plaques etc. can do very finely detailed casting in most metals, which might be a more suitable look for a vintage vehicle. Billet... well, to my eye it never looks right on these cars. Especially not ERAs.