1955 Chrysler C-300 twin carb restoration.

Hi, I've removed the twin four port Aluminium carbs off of my 1955 Chrysler C-300. They were gummed, seized and in a pretty bad way. I've cleaned them in a ultrasonic bath with anĀ Oxidation and Rust Removal Ultrasonic Cleaner SolutionĀ and then blasted them with walnut shell to remove all of the old tarnishing, however so they stay looking good, I wonder what you might advise to either plate them with a protective zinc or anodising. Thanks