Paid $479 a couple years ago - muffler option adds $150 to the $329 price in the link below. Has the 4 inch muffler option which makes it sound more refined and less raspy than simply just a muffler delete. Pops and crackles if you blip the throttle after being under load.
3 inch double wall quad tips.
Fits 2015-2020 WRX. Very simple driveway install that takes 30 mins.