how to repair

Even though I have owned several 65 barracudas, I couldn't quite figure out from the first picture where that opening was located. Use a wire wheel on a drill and get all the rust out of it, and then use a rust converter on it, and use a small amount of Bondo to fill in any gaps. After it is painted over and you're preparing to put on the Chrome trim, put that closed cell foam on there and as an extra preventative put a little bit of clear silicone sealer around the opening. I usually put that clear silicone along the top of the quarter panels in each of those trim holes to keep water out of there as well.