I had most fun riding scoots on my Piaggio NRG 50 extreme, after installing 72 cc kit, another carb, air filter and Leo Vince ZX exhaust.
It developed 10.5 hp instead of OEM 5.5 hp.
It screamed like crazy, revved 11.500 rpm + and could outrun pretty much every 125 cc 4-stroke.
Top speed was 110+ km/h indicated and on the road between cities I could easily overtake cars doing 100 km/h.
However, I strongly dislike higher displacement 2 stroke engines, for example, 125 cc 2 stroke, that develop usually 30+ hp.
All the power is developed towards end of the power band and they are quite unpredictable, especially in the rain.