BSA/Triumph made a documentary of the 1970 Daytona 200, expecting that they would win it. They didn't, ha ha. But in the film there's pretty good shots of the factory CB750s. Look it up on YouTube or elsewhere, but it's pretty common. Fun fact; the same guy who kept them from winning in 1970 won the race for BSA the next year: Dick "Bugsy" Mann.