Isuzu Rigid Truck Headboard Toolbox and Custom Underbody Toolboxes Punching Bag Hanging Frames Isuzu Truck Headboard Toolbox Reference no. 1984 We recently fabricated a simple headboard toolbox for this small Isuzu truck for a customer. The box features and elevated and protected storage drawer on the passengers side, unistrut roof racks fitted to the top and central locking for the doors.