Remove the honeycomb section media blast it and re-anodize it. We've restored over 200 1970 Challenger grills. www.tuffwheelrestoration.com Totally Auto grill silver is okay for a driver quality also, Krylon metallics would work also, without media blasting you won't get good adhesion though.

Stainless Steel and Aluminum trim restoration by MCB Restorations. We offer show quality trim restoration for all brands but specialize in Mopar. See our website for other examples www.mcbrestorations.com or give us a call at (810) 395-7162