That's the tank. Today I had to make the rear spring hangers so I can drop the engine and trans in the chassis. The M.O.R.E spring hangers shipped out today. It fits, Just didn't look yet to see how it clears the rear end. I'll probably have to modify the filler hoses. On the other cj8 project if I remember right I have the rear end moved forward 1" because of the oversize tank. That may be another option to keep the tank.