If you haven t already replaced those rotted or cracked floorboards in your 356, you need to. Don t waste your money on another set of wood floorboards that will just rot like your old ones, or plastic ones that will crack with time. Rennline now offers aircraft grade aluminum floor boards that will last forever. These floorboards are very light weight and install in minutes. They re exact replicas of the original floorboards without the need to ever replace them. Black in color.