[baddley]

I have a Tao Tao Quantum 150 and looking to do some upgrades. If I uprgraded the parts below, how much top speed and or power would I be gaining ?

performance exhaust pipe
CDI unit and coil cap
UNI air filter

I am looking for more top end mainly, does anybody know what to change in the variator or what weight of rollers I need to use to achieve this ?

Thanks
Scott