I was looking at this v6 Mercruiser with a customer. Based on the amount of damage I asked the question if the last time the boat was pulled from the water the drive was tilted and not lowered before storage. That is what happened, both Heads have major breaks (see photo)....the block is grenaded in the valley (below intake) and both manifolds have 5x8 inch pieces blown out. This motor must have been FULL of water.