note the holes . careful you don't end up with this , i fix the holes with my epoxy formula , the holes in the exhaust box is the ones to be careful off , your motor will still be pissing water out the **** hole , at the same time you are loosing water through the exhaust . THE MOST IMPORTANT ONE IS THE GASKET FACES ON THE MAIN BLOCK IF THE MOTOR HAS BEEN USED IN SALT WATER MOST OF ITS LIFE ,THE GREY ARES WILL SHOW THE CORROSION