4-cycle snowmobile engine?

[GTS225]

Looking for a little advice.
I have the opportunity to pick up an Artic Cat, 4 cycle snowmobile engine, (actually the whole sled), for a mere $50.
I'm thinking it might make a suitable mini airboat powerplant, with horsepower to spare.
From what info I can find on short notice, it's a Suzuki-built 3-cylinder, 660cc, EFI powerplant, of 45 HP. Even with it's liquid cooling, it shouldn't be hard to fabricate a closed loop cooling system for it, and utilize the prop wash for air flow.

Any one care to advise me with a few pros or cons?

Thanks.....Roger