100 Conversion

Looking around I've noticed that Cento barrels come up every now and again on Ebay. My question is (as I'm no engine expert or tuner for that matter) but is it possible to use the Cento barrel on either a 50cc or 75cc machine?

I'm guessing that the gear set up would need to be looked at as well, along with the carb.

Yes you can use on a Lui. Need to change crank for sure and ideally you'd do the gears, carb, and other engine internals - oh a different pipe