N54 Technical manual?

As in the title, i'm after one, some sort of manual that literally lists every part and location (even wiring diagram if possible), that sort of thing.. i can easily identify most of what i can see, there's a few vac tubes and wires that i'm a little hazy on though (plus i don't have the vac canisters, probably other parts...), is there a place i could buy a really good one from? or even download a giant PDF?

thanks