Modern Vespa

following parts are on the way for my et2:

malossi cast iron 70cc cylinder kit
dellorto 17.5mm carb & matching manifold
malossi E5 racing air filter
kevlar belt.

already have the multivar fitted and a giannelli 'go' pipe.

question is: what size jet(s) do i need for the bigger carb? do i need to get a selection of sizes?

this has been quite a popular mod/upgrade for many et2 owners, so please post up your results, whether you changed the jetting in the new carby or just bolted it on with the setup it came with.

also which clutch spring do you recommend i use with this setup?

(if i need to order some different jets, i'd like to get them on the way asap rather than have the above parts arrive then have to wait another couple months for the correct jets to arrive)

cheers guys.

anyone?