horrible idea!!!!!!!!!!
#1 even if you were able to mate the clutch to the crankshaft, the crank shaft would never take the stress of driving the axle.
#2 the oil seal would give away as soon as the crankshaft started tweaking.
#3 the cvt system is far more superior to a centrifugal clutch.
#4 not enough HP to turn a 400+lb buggy directly from the crankshaft to the axle. if it did roll you would be going far slower.
what makes the 8hp gy6 so efficient is the combo of the cvt and the final transmission, you'd be bypassing both.
there are far more worthwhile ways to spend the money to hop up your existing cvt/motor.
IMO