On the last run of the year going to the trailer the 454MAG MPI in a 95 272 Baja suddenly quit. It has water in all 4 cylinders of the port side. A new manifold was recently installed. I have not begun to trouble shoot yet. Has anyone had a similar problem before and might know what this is. I guess worst case is a cracked head but i'm hoping for something a little less dramatic. The boat is used in salt water and left in a marina and has 300hrs on it. Also the boat runs 55mph with a bravoIII drive and the bottom has been painted. Does anyone have a speed for this boat with the same engine package.