1967 Barracuda grill and trunk panel help

Trying to restore the front grill.

First- with front grill can they be polished or do you need to re anodize them. Is there anyone that is re anodizing without spending a fortune.

Second- on the headlight portion is the part around the head light chrome or argent and how do you repair that portion. Can you powder coat in argent?

Third- What size and types of rivets did you use

Forth-The trunk panel how do you secure the Barracuda emblem. I have two panels The better of the two has the emblem loose. Can it be Jb welded or something different

Any suggestions would be appreciated.