Fitting a ga16de

Got a 2002 k11. As most here will know. I've got the ga16de sat in the house now.

Does it connect directly onto the engine once I remove the original or do I need anything to connect between?

Read somewhere i need to extend the 70mm thats on the airbox. But unsure, also thinking if the piper cross performance filter to this. Any other recommendations before I proceed?

Thanks in advance.

Sent from my SM-G960F using Micra Sports Club mobile app