This is interesting to me, as the (Paul) Dunstall Nortons (to also include the 750 Honda) were the only variations of a factory motorcycles, that I had heard of, for years. And I learned of those, back in the 1960's And Then, I found this place & started learning more & Still Learning. So, everytime something like this pops up, I might not be able to add anything, but I will sure be looking to add to my knowledge. So, consider me subscribed.