TOPIC: Looking for ideas for edge molding/trim pieces...

I'm getting to a stage on my 57 Glasspar Club Mariner where I am refitting all the molding and brightwork. I have a specific trim part that is partially broken. It's a curvy aluminum edge trim that fits the upper cabin outside, below the side windows. It hides screws that hold the top to the rest of the boat. I've got the originals, although one side is missing the last 8 inch curvy section.

Are there any products out there that would act as a moldable trim? Aluminum, or other soft metal that can be shaped and bent? The part is almost flat, but with a small "J" lip to go under the edge of the fiberglass.