are you adding HICAS too? if not NA is just fine. if you dont go with 3" piping and stay stock your NA intake piping wont work (the part that snakes under the headlights) as the hole for resurcs wont fit (but if you are going BOV just block that hole up. and second the TT condensor for the AC.
*****Disclaimer - My spelling is horrific! i appologise in advance :)******