Thanks everyone!
Hat tip to my readers for the links to the (always indispensable) Pipeburn magazine and article. It Fred Krugger’s ’66 Honda CB 450 – “Tribute to Japan”. Sent to me with no explanation or info. It’s obviously a quality build and professionally done photo shoot and I’d very much like to give some attribution so as not to step on copyright etc..
Motorcycle Photo Of The Day 
Steve, you got me, what is it !!! ??? THAT , is original !
It’s a Honda 450 DOHC twin with torsion bar valve springs from the 70’s with the head reversed.
Manny
+That’s Belgium custom builder Fred Krugger’s “Tribute to Japan”:
http://www.krugger.net/?rub=accueil&newsID=156
and
http://www.krugger.net/
and
http://cyrilhuzeblog.com/2013/01/28/tribute-to-the-legendary-1966-cb-black-bomber-by-fred-krugger/
Ride on.
Roadkill
Fred krugger http://pipeburn.com/home/2013/1/25/fred-kruggers-66-honda-cb-450-tribute-to-japan.html
Jesse’s right : there’s a french mag called Cafe-Racer. This bike has been built by Krugger after he met thoses guys. http://www.cafe-racer.fr/kiosque,419,cafe-racer-61