Corsa Sport Axle Back Exhaust. Mint condition, near new! Removed from a show car. They retail for $710. $550 shipped.
http://www.americanmuscle.com/corsa-sport-axleback-1114gt.html?hc_location=ufi
http://www.americanmuscle.com/corsa-sport-axleback-1114gt.html?hc_location=ufi