i have a 1978 gran sport with a polini, dellorto pbhg 20mm carb, and a homoet 6p... no air filter, but it will have an uni-pod filter.
right now using panty hose
the beast hauls ass, eats hills and cars gotta get the hell outa my way
60mph with my skinny 150lbs ass on it, really quick off the start.
i dont know sprocket sizes.. never counted the teeth and bought the ped as is