68 Barracuda grill insert detail

Masking that to spray with something like Alsa chrome or any spray paint would be a challenge.
Another point to consider... Many owners ( including myself ) have removed the argent paint from the grille surrounds to reveal bright finish aluminum. It looks OK from a distance but when you walk up to it you can see reflections of the voids above the surrounds that was never meant to be seen.
A bright chrome on those ribs may do the same thing which could look like chrome missing in areas. Anyway.. Show us your end results.