? From a n00b. What's involved in "marinizing" a motor?

[( . )( . )]

Like let's say you have a 2003 Cobra terminator motor, with a whipple and a decent safe tune you'll have no problem pump out 650+hp. However how can that be retrofitted into a boat?
Thanks

[TIMINATOR]

Bigger oil pan, oil cooler, open up: the ring end gaps,guide clearance,piston/wall clearance,buy better valves,awwww hellllllll take it to a BOAT engine builder! TIMINATOR

[Indiansprings]

Hyjack... Timmy, How fast?

[TIMINATOR]

121+ with 3 people and 1/2 fuel. Carbs too lean, plugs look blistered, fixed that, haven't installed the nosecone yet. Haven't tried the new nitrous kit either, but its on there. Shoulda come out for a ride, no-one else would ride in it. They squat to pee. TIMINATOR