Polishing Aluminum and Stainless Steel Corrosion on Classic Car?

I have a 1963 Chevrolet Bel Air that has aluminum trim on the grille and I believe stainless steel trim on the hood. Both these surfaces have stubborn corrosion issues. I have tried "Liberty brand metal polish, Brasso metal polish, and Blue Magic Wheel and automotive trim polish. They have all given some improvement, but the stubborn corrosion on the stainless steel hood trim with the word Chevrolet embedded in it, still has corrosion or a film that will not come off with the aforementioned polishes applied with a soft cloth.

I have thought about trying copper wool or fine steel wool, but have not as of yet, for fear of damaging the paint inadvertently. Any suggestions or product recommendations would be welcome.

By Charles C.