I assume that you are referring to the wide lower door molding, and not a rocker molding. I am not aware of them having a rocker molding.
That is a very tall order!!
Don't do that! Just have it repaired. From what I understand, those are chrome-plated stainless steel. Definitely NOT something that the paint-less dent folks would take on. Any reputable chrome plating shop should be able to repair and re-plate them, if needed.