75 mph on a scooter sounds like an accident waiting to happen if you run over anything bigger than a golf ball. those are some tiny-ass wheels, man....

Can you turbocharge a 2-stroke? Probably, lol, but what would be the reason? I imagine you'd have to adjust the timing every time you ran that thing and I bet the power from the turbo would go into shaking the engine as much as adding any torque.

If you want a fast, small block engine on a bike then look at some euro spec aprillias. Those things haul ass.