Came in today and bought one of your Borla catbacks for my SS/SC, great price (499.99) and great service, too! I got it installed and it sounds so good! Really deep and mellow at idle and under normal acceleration, not too loud under heavy throttle, but people definitely know you're coming. You can still hear the s/c whine with this exhaust, which is exactly what I wanted.

If anyone is considering a Borla exhaust for their Cobalt, this is the place to get it!