Can you tell us about that oil cooler? Is it OEM, or did you add it? Where does it pull the oil from: the head, or the oil pan, below? It looks like it comes out of the head, with the 90-degree hoses out the bottom of the oil cooler, pointing at the head.
Overall, that bike is really pretty. It is quite the ride, a genuine head-turner. It is also quite intriguing to CB750 fans, like all of us, here. Cheers!
1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII