Borla ATAK is probably the loudest exhaust you can buy for these cars. If you ever decide to remove the cats and/or add headers, your car will be very loud.
2011 Summit White Camaro 1SS/RS
-6.2 LS3, TR6060, 3.45, G80
2004 Black Silverado 1500 2WD Regular Cab, Short Bed
-5.3 LM7, 4L60E, 3.42, G80