This is an interesting question because I'll be facing the same dilema with a Hellcat.
I was thinking of doing some preshading with an offwhite to lighten the center of each panel or maybe painting one or two panels an off-shade of blue to make it look like the panel had been replaced or repainted. And then a light wash of light grey in the panel lines to make it look like some saltwater buildup.
But I'd be open to suggestions from people have done this in the past.
-Fred