Corsa Performance Silverado, GMC Sierra 4.8L, 5.3L V8, 143" WB, 3.0" Dual Rear Exit Cat-Back Exhaust System with 4.0" Tips (24921) Sport Sound Level 3.75 Option 1 - Stock 90mm

Option 1 - Stock 90mm LS3 throttle body to be used solo or as a core for the  Southways 108mm throttle body found on here as well

etc which means you needed someone that specializes in the AC field

7L V8 Cat-back Exhaust System

policies per website purchases apply

Corsa Performance Silverado, GMC Sierra 4.8L, 5.3L V8, 143" WB, 3.0" Dual Rear Exit Cat-Back Exhaust System with 4.0" Tips (24921) Sport Sound Level 3.75 Option 1 - Stock 90mmVEHICLE FITMENT 2009 2013 GMC Sierra 1500 Regular Cab Standard Bed 4. 8L 5. 3L V8 119" Wheelbase 2009 2013 Chevrolet Silverado 1500 Regular Cab Standard Bed 4. 8L 5. 3L V8 119" Wheelbase PRODUCT DESCRIPTION 3. 0" Cat Back, Dual Rear Exit with Single 4. 0" Polished Slash Cut Tips SPORT Sound Level High Performance Sound. Distinct Rumble at Idle. Aggressive Sound Through The Gears. NO DRONE DURING CRUISE. *Only Sound Level See CORSA for More Options.