Alright i'm gettin a new exhaust i'm happy with the sound it produces now with the 2.25" catback side exit but i'm putting lowering springs on it and i will have clearance issues with it. So i'm thinkin a shorty header but i need suggestions on a brand i'm lookin for a lower smooth sound not a aggresive high pitched one and i also need suggestions on a muffler.... any ideas? I do know that i'm going to center the exhaust in the rear bumper with a Black Chrome Z06 style tip

 

A short header won't change the sound as much as the muffler will. Sound is overrated anyway.