Well i just emailed back and forth with a rep from corsa performance about getting a MUFFLER with a 3 inch inlet and 3 inch outlet that would normally be on a newer silverado/sierra. 400$ how insane is that haha. i love the sound and will have a corsa one way or another but i just missed winning a bid on ebay for an entire exhaust system for an escalade with a 5.3 for 150$. is there anyone who runs a corsa here who paid less?