Air filter box for Vespa 150 VBA1 and SI carb with choke

Schaltroller / Classic Motoscooters Vespa Wideframe
1

Hallo, my Vespa 150 VBA1 (1959) has a SI carb without choke. I would like to install a carb with choke (and in the close future to tune my Vespa).

Are on the market air filter boxes (and related commands) that can be mounted on my Vespa to install  carbs with choke? 

Thanks for your help,

 

Guido

2

You have to use this one

 

http://www.sip-scootershop.com/de/products/vergaserwanne+lml+fur+vespa+_23916800