That is correct. The Max HP change was due to the development of the lighter 300. The main constraint for max HP of 250 was weight not power.
When/if I repower my 2006 228 F250, I will definitely put the 300 on it. I think the hull is better suited for the 50 extra HP and 30 less pounds back there.
JPM
Mixin'ItUp
Savannah, GA