Im putting a 304 roller cam engine into a ski boat. Has a 308 but the old engine is a bit tired. Theres not a lot of information on how to marinise a 304 exactly, I've got it pretty well sorted i think but after some opinions of people who have done it and what mistakes can be made etc. Basically i am copying the 308s cooling system, blanking off the thermostat and going to tap some 1/2 fittings into the rear cylinder head disch arge in the intake manifold. I believe this is d one because of the angle the engine sits so you dont get a massive airlock at the rear. Im going to fit a thermostatic control as well. The old sump also has a basic oil cooler, just a 3/4 pipe inside the sump submerged in oil. Its plumbed on the suction side of the water pump and the raw water gets drawn through before getting to the pump. It wasnt connected to the 308 but i was thinking i might as well hook it up. Is it worthwhile having? I bought a VS SIII ute, its a 2000 model. Its says its a 195i but i dont know how to confirm that.