Reading a couple of threads on the US site, unless you change the downpipes you wont see much difference. It might sound different but dont look like it will do to much performance wise.
Plus side it will look better.
Titanium Silver - Lemon Dakota Interior
LM Reps - Borla Exhaust - Active Autowerks Chargepipe - Blow Off - JB4 G5 ISO - Burger Tuning Intake - Koni Street Shocks - Apex Springs - Whiteline Bushes - M3 rear Arms - M3 Front arms -Amspeed Adjustable Drop Links - Akebono Pads