I go the polishing route on those parts also but I never have chemically stripped any of them. I just start with sandblasting them in the cabinet that I keep a real aggressive media in to strip the chrome and copper off. It is usually already starting to flake off and pretty thin layers so the blaster will take it off if you do it slowly. Then I sand in stages til smooth, using 1500 final grit, and then polish. Like Larry said, they will tarnish in time but I use Autosol to final polish them by hand after buffing and then spray them with Eastwood Metal Protect to preserve the shine. I have parts that have been done for four or five years that look like the day I polished them. They are indoors, not outside though......
