Vespa PK50XL automatica

Hello, 

i have a PK50XL automatica with a Pinasco 75cc cilinder. ( https://www.sip-scootershop.com/nl/products/racing+cilinder+pinasco+75+cc+_18500000) with a 16-12 carburator (https://www.sip-scootershop.com/nl/products/carburateur+dellorto+fhbb_41036000). 

I think I need a bigger carburator, but I don't know what carburator I need, or do I just need another jetting kit? 

 

Thank, 

Kobe