Vacuum hose connect points??


I have a 2004 Lincoln ls 3.0l v6 . The car has been in my family for years. Unfortunately, the member who had it before me abruptly and tragically died while in the process of working on it so it was a mess when I picked it up. Most frustrating of all is the fact that for the life of me I cannot seem to locate where my brake booster vacuum hose connects to. Is it my throttle body? My intake manifold? Does it simply connect to another hose all together ? I have been trying to figure this out for over 2 weeks now. Plz help me