In a recreational application I would budget
for about 6000hr pre-rebuild for this HP. Like everything else on a boat, engines are subject to sh*t happens events
and the greater the HP the greater the chance of something breaking before it wears out. All of the failures I have experienced with the high (375 & up)HP 3208s have been where something went bang (crankshaft usually) but these were all in commercial
workboats subject to rapid acceleration and deceleration up to 150 times per day.