Has anyone had success restoring the metal trim pieces used on the front and rear Bumper?

I'm assuming these are aluminum extrusions (they're really soft and pit very easily), but they seem to have a finish on them in addition to simply a polished surface.

Also, what is a good source for replacement rubber strips for this bumper trim (front and rear)?

One last one: Can I assume that the rubber piece on the rear RS bumper is the same part as the normal cars, and that it just "bent" to fit the metal trim piece and flare?

THanks lots for the help.

Lee