Ok another question, do we stick with the actual production numbers of the A/C? Also your link to the Aichi D1A lists its max bomb load at over 800lbs. But I am no expert on pre WWII Japanese Navel aircraft. So I do not know what compromise would have to be made for it to carry a 551lb bomb. What effect on fuel load, or would it require keeping the rear gunner back at base or not.
Also where would the confrontation take place? I suspect that the Japanese Fleet would have better access to resupply