Hey, im looking to get a good catback system for my N/A Impreza 2010 sedan. i want to keep the dual tip setup that it has stock. ive tried x-force but when i emailed to see if the wrx system would fit it, they said that it wouldn't : \
or does anyone know of a good catback exhaust that will fit my car, how much it will cost and where i can get it fitted? also i would like to look into uneven headers too. does anyone have any good advice on these. do they decrease power and is this boxer rumble significantly increased?

Thanks guys!