Chico - The Alcad paints are the way to go. However, they require an airbrush and all the headache that goes with it. They are expensive and you'll need to practice, but when all is said and done, they are outstanding.
If you want to avoid the airbrush route, I highly recommend the Model Master Metalizer paints. The Aluminum paint with the gloss metalizer clear coat (applied after buffing) is a very, very good finish. I recommend you try the variety of MM Metalizers unless you are determined to go the airbrush route.
One other thing. If it's a part you can fabricate in brass, do that and have the piece chrome plated. Nothing looks like chrome like real chrome.
Just a few thoughts.
Andy.