Airbox suggestions for a 25mm Dellorto

Hi.
After a few problems with the Jetex carb on my standard sx200 motor I decided to change it to a 25mm Dellorto phbl kit and a 42mm Ancillotti Scootopia exhaust.
Having bought both I totally overlooked changing the airbox plastic elbow.
Can anyone tell me what filters they recommend for my set up. Ideally I'd like to keep the airbox but not too bothered. If I keep the airbox what filter and bellows should I get.
Ta
Kris
After a few problems with the Jetex carb on my standard sx200 motor I decided to change it to a 25mm Dellorto phbl kit and a 42mm Ancillotti Scootopia exhaust.
Having bought both I totally overlooked changing the airbox plastic elbow.
Can anyone tell me what filters they recommend for my set up. Ideally I'd like to keep the airbox but not too bothered. If I keep the airbox what filter and bellows should I get.
Ta
Kris