Racing kit for px125cc

ok, i will be shortly be buying a px125cc and will be putting some kind of new cylinder/racing kit to take it up to 177cc. I would buy a px200 but there are only going to be 200 left in the UK as Piaggio have decided to cut the market [:@]

my question is, what do i need to fit a kit ?

jets, carb, fuel / air mix
does anyone have any idead ? I want to do some touring through France and Spain, will the kit be reliable enough to do this, i don’t want the scooter to b*** up

any ideads ?

Go for the 152 malossi kit. it comes with the correct jet and is more powerful/reliable that the 177.