Matt,
I dont know if he ever actually ran one?? I know the cavitation plate had to be moved up by the prop, but I am not sure how he did it or what.. I would think the two sections would have to be welded back together very accurately or there could be misalingment and would cause problems.
Now if you put a Hydromotive cone on it, it might be better?? Hard to say without testing.
I still have his number if you want it.. pm me for it..
Dick