serious tuning

Hello.

I’m from Sweden and have built a transporter moped (with a platform and two forks in the front) out of a Aprilia sonic. It’s quite well working, exept it could have use of some extra power. Therefore I have a question: Is it possible to fit a „Racing cylinder 115cc MALOSSI“ or a „Racing Cylinder POLINI 120ccm“ on a regular 50cc minarelli engine? If yes, what more do I have to change? Crankshaft, transmission and so on…?

Kind regards
Viktor