If you do a search on here or PWC today, you will find the diagram. Per factory pipe instructions, take the incoming supply line to the exhaust manifold. Take one exit from the head and run to the top of the head pipe. Take the bottom of the head pipe to a T connection. One end goes overboard and the other goes to the stinger on the pipe. The other exit from the head goes to the rear overboard pipe that dumps into the pump area.