?:?My 75 302 manifold has a t- shaped port on the front that the heater hose hooks to.It also has to other parts that screw into the body of the t that are blue and have little teets coming off of them.They don't appear to peform any function but i figured i would ask.I bent the heater outlet port threads while trying to pull the other parts off so now i mkust go buy a fitting and want to know if i must get one from ford or any off the shelf piece that has an elbow and pipe threads.Thanks wilkliam in va,. hope this makes since.