'67 Barracuda Grills

Uh ohhhhhh.... I had to rechrome the trim and want to repaint the grills

They're heavily anodized aluminum, not chrome.
You can have aluminum chromed, but I would guess that is not your intention.
You can also get them polished, but it is a bear of a job and not cheap.
If I can offer you a suggestion, look for a really nice pair, they're out there.

Here is a pic of what they looked like new from the factory:

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