the one that doesn't look right is probably the one centered at the wheel wells - it's shoter and thinner than the others and is really just a stiffner, doesn't attach to the frame - should be 3 full size ones, one for the front, one at front of wheel tubs, 1 at back of the tubs .... and then there's the one below the tail gate that's actually the rear structure of the box itself
Bill
