I checked the parts catalog and they dont have anything for a vh45, q45 or a nissan president. I went to the dealership today and was able to get a part number but now i have a new dilemma. I took the vtc assembly apart (stupid decision because the manual says not to) and when i was at the dealership i asked one of their techs and they said when they go through their class they tell them not to take it apart and also said that 1 person took it apart but they got a whole new head. So they never reassembled it. This is starting to worry me as i heard the assembly is expensive. I wounder how far up i have to go with nissan to get this info?