What is the correct p/n for the water pump housing (383)? Mine has a p/n 2780987, but Im not sure if this is correct since the inlet/outlet pipes for the heater lines are different in size, and I belive that the 69 is suppose to have both 5/8" hoses. I havent been able to find out what a 2780987 is for, but im going to guess its 70 or later....