that hollow fake echoey sound is so overrated it's ridiculous
Hooker aerochambers are amazing
Hell... if you want to go cheap go up to Madison Muffler off of John R in Madison Heights and pick up some california turbos for it. Those sound damn good too.
Don't make it echoey and hollow... make it throaty and in your face like every exhaust should sound.
Werfin' nebels yo!