This is a box I made at Dominator to house the fuel cell that matches the couture of the trunk floor. I first made 2 brakes in a piece of 16 gauge steel. I then made side panels to match the floor curve on the sides and to complete the box. I used a TIG welder to weld up the corners and ground down the welds to be smooth. I used MIG welder to weld it to the stock floor after about an hour of cleaning with a wire wheel.