right ok were do i start......
i take it you have a smooth variator boss?
are you willing to chop into the CDi (i just bought a race CDi)
aaand do you have a 82 main jet ready for the carb?
these things alone will get you to 40mph or over depending on your size and weight (no offense intended)
once you have these look up another members post (he's called Streido) on here about derestricting the Ag50
any probs just ask we are all very happy to help
and welcome to the Forum