GMC Sierra 2011 GM and Chevy Antennas (Sierra - Yukon - Avalanche - Silverado - Suburban) Custom filter fits 2007-2008 models only because the air sensor is different from other models for 450 SAR Hedrez 4-speed with Y-pipe, clean, no dents Fits 2007-2013 for 1600 SAR Catback, two inlets, two outlets with original Magnaflow muffler, its sound is pleasant and not annoying for 1200 SAR Fits 2007-2013 Removed and installed new flanges and gears Whoever takes all the parts for 2800 SAR Location: Eastern Province, Qatif