Rebuilding the trunk

Since removing the fuel cell I’ve had a big hole to fill in the trunk area. I’ve installed a 4″ deep sheet metal pan in the trunk to fill the hole. It dropped right into the box tubing surround from the fuel cell. I’ve welded it in and seam sealed the bottom side. It should be a pretty nice setup. It is going to need some additional bracing on the bottom face to keep it from resonating.