match

G'day all, I recently bought two of these little things, and they're awesome. I never realised there was a following for little bikes, but it turns out that's rad. Does anyone else here own one of these? I think the engine is a skyteam st125-15, but I am not sure. More troublesome is...

So just having a look at carby options. I have a manifold on the way but the 22 fakuni just really wont cut the mustard with this motor so looking at a KEIHIN PE24 but dont really know to much about them. Is the 24 a good size match up for it or better off going bigger? Not to sure about running...