Here's a bottom view of the box. Note that it's open, but there are 2 3/8" wide strips glued to the edges of the sides of the box. The strips make the sides of the box much stiffer. This will remain open to provide access to the tank and engine mounting bolts. A hatch will be added to the outer nacelle. I had hoped to be able to access the tank from the wheel well as on my B-25. However the retract unit blocks half the opening and the wing's main spar blocks the other. Uggg.
