Originally Posted by 
Old Farang
				 
			Those pictures have nothing to do with a governor, they are only about where the PTO connects to the gearbox. As JDNSW posted a governor would be mounted on the engine and belt driven. From what I recall they are roughly square shaped, a bit smaller than a dynamo. Then there would be a linkage from it to the throttle, which yours does not appear to have, only the connection from the hand throttle. 
What made you think that it has a Holden engine mentioned in your first post? 
I am a bit surprised that your thread has not been moved, as the Forum has a very good section for Series II & IIA. You would be better off posting in that Forum which has a wealth of info and is followed by current owners.