Alternative to Bright Dip Anodizing Trim

Are there any decent alternatives to bright dip anodizing aluminum trim? For instance, could the trim be polished (after stripping the original anodizing) then coated with say a clear powdercoat or clear anodizing? Is there another clear coating that could work?

I'm straightening and refurbishing some trim on my '66 Dart and have zero local options for bright dip anodizing. Plus, it's not really warranted for the type of hotrod I'm building. I'm just trying to find a way to protect the bare aluminum and keep it from tarnishing too quickly.