i actually do have a 1966 BSA 650, this venerable thunderbolt.
mine is not pristine, runs on one old 30mm concentric carburetter, has such poor compression that it only goes 65 mph at screaming top end, and currently is waiting for me to open up the primary drve to see what is wrong with the clutch. but unlike the spitfire, thjis one i own, and can ride.
yet another Motorcycle That I Would Own If I Were Rich.
thi s is a 1966 BSA spitfire mark 2.
this is the fastest superbike of the 1960s, arguably running 120 mph stock. this one is for sale.
i havent asked the price.
a stunningly beautiful example of this phase of motorcycle design. the spitfires were the pinnacle of BSAs development over many, many years. 653 cc vertical twin, four speed, high compression, hot cams, the whole thing. this particular motorcyle is stock, with the original GP2 carburetters.
just the carburetters and the remote matchbox float assembly are worth US$1500 these days. this motorcycle in the condition its in is worth about US$10,000. th ecarbs have never had fuel in them. the tank has never had fuel in it. its a restored, uniused, unstarted perfect example of its kind.
if i owned it i would run the shit out of it at the races in the pure production class, and it would get muddy because i would run it every day from home until i couldnt start it any more.
this is a spectacular museum piece, as is, and is totally worthless unless you thrash it as its designers intended it to be thrashed.