Mike,
AFAIK there is not way to perfectly restore the finish of a Ramcharger box. I believe that all the restorers paint it....which is OK but not original. I'm still struggling what to do with mine as it's the last pce I have left to do. There were some posts by another member with a '70 Bee awhile back that showed some pretty nice results without going the painting route....think he use Pledge among other things. Sorry don't remember who it was.
I have the new sticker, rivits, cables, seal, clips and rubber flappers and it's easy enough to replate the brackets but I remain undecided to go original (will show some fading no matter what) or go paint (obvious on close inspection).
I look forward to seeing what you do and how it looks.
Dave