r they cheap? and does a go cart frame be good or is a shifter kart frame better?
Whatever you can find air cooled and over 200cc.
......a 200 cc 2 stroke will make any cart fly.
Isn't 200cc with a transmission a bit overkill? Aren't most 100+ MPH Pro shifter karts 100-125cc? I can see a clutch-driven 200cc engine being okay, but with 5 or 6 forward gears?
Not to be negative, but it sounds like a recipe for suicide to me.