The big guns of the trade would have found even more inventive ways to stop them no way would they let the Stevenage upstart win any big races AMC and BSA were doing ok with outdated factories and clandestine agreements to keep triumph out of racing and the small classes left for Johnny foreigner or big internationalsSounds like the suspension changes were the big winner overall. Imagine if George Brown and John Surtees had the same back in their day..........
Not sure it would be good for the road, The Bore and stroke are changed, Sounds like a Rev' Box.