The parts showed up and it was time to run more lines. Fuel lines and oil lines are the next thing to do on the engine. The picture with the 4 way is for a different location I will be using a Tee fitting in this spot. The fuel will go to the electric boost pump and up to the mechanical fuel pump with a one-way check valve. This way the boost pump only goes to the injection system and not back through the mechanical fuel pump to the injection system. The oil lines are another system that needs to be plumbed in. Looks straight forward out from engine to front cooler (cabin heat) back to back cooler and re-turn to engine.