You might have more luck going to the power stroke section.
That said and i'm no expert on this, but I think the international 365 was a decent engine, but I would not want to increase the power very much as that is what got Ford into so much trouble with the engine, they pushed the power nos, to stay competitive and it did cause them a lot of problems. The VT365 was never designed to handle that kind of power.
Trap, Jan and the Pup
2013 Monaco Diplomat 43dft
2010 Black Jeep Liberty