For next year's build right now I'm thinking "possibly".....
Add JackShaft / Shift Kit
Replace Rear Hub with a 3-Speed Hub
A few minor mods to motor for power (head, carb, exhaust)
NOTE: Right now I'm wondering about anyone using hand-brakes....
Using a hand clutch lever now takes the place of your second (front?) Brake?
All this having only one wheel brake sounds DANGEROUS!