There is 3" clearance from the back edge of the fenders to the bed frame upright it just looks like they overhang in one of the pictures, the tail gate will hinge from the back cross member and sit flush inside the rear opening, need to figure out the hinge and lock systems have a few ideas I will try, also need to box in the space under the bed and frame at the rear I am thinking license plate lights and louvers for this space.