i just installed a GM serptine belt system on my 396 its the one from Summitt fits good my question oes anyone know which water hoses to use to the radiator and the reverse water pump didnt come with 2 inlet holes one for the heater and the one for the by pass to the intake can anyone help me out on this one to if i use the one for the bypass hose where does the heater hose go or vice versa