piaggio zip dopller air box

Hi there, i have a friend who just brought a doppler air box, and niethwer of us can figure out how to fit it, i know it seems simple and it said it would fit straight onto a piaggio zip 50cc. have any of you got any experience with them? thanks

 

Just take the old air box of and slip the new one straight on! simples

 

yeah we did try but it didnt seem to fit that easly on, and the pipe from the carb didnt fit into the one on the aire box

 

are u using the air tube of the old air box? and is it the standard piaggio zip carb

 

maybe showing some pics will help.