I am looking to put in a needswings single CAI.
I have a Mercedes engine cover.
I was wondering if the engine cover is a direct swap on our NA xfires, or if we need to modify it in any way.. On the needswings they write on the one they sell that they do the needed trimming to drop onto the xfire... What are they Refering to as to these trimmings?

Any help would be great.
Thanks