polishing an aluminum grill?

I spent hundreds of hours re-doing a tail panel on a '66 Dart GT. If I could help someone not go though my experience with that panel, all would be golden. You're biting off a lot if you want to do this yourself.

IIRC, those grilles weren't the shiniest things coming out of the truck plant when they were new. Yours looks pretty good to me. Check out the photo.