On August 13, my Challenger 180 had a faulty hose and going out with my family, we took in a lot of water. The engine was completly underwater and we were able to salvage the boat. It never went under but the engine was covered with water. 4 days later the insurance company told me to take it to a shop to turn the engine over, it did turn over. They told me that there was water inside the oil. They want to rebuild the engine. Will this be OK or what should I do. Please help!!