I found that pic above on the internet. I do have a 2 vac hoses on mine , I'll look and see if I see any numbers on it. I've read they are pretty rare to find and to get one that does not leak is even harder. but there is a guy here that says you can use a one vac hose one but have to do any changing somewhere. I don't recall. but you can do a search here and you will find it. how are your heater hoses routed on your dart?