I should add that older bikes - I'm talking 50s through 70s, British and otherwise - are getting harder and harder to find over here. I don't know where they're all hidden! I
can tell you In the early seventies, we used to go to motocross events to watch the BSA 441s race against Rickman Triumphs... amazing.
One of these years I have to get over to the Isle of Man for their antique bike race.
PS: Although they're totally politically incorrect now, I LOVE the sound and smell of high-performance two-strokes!