2014 Chevy 4.8L and 5.3L GAS 1500 Half ton K3122A - FOR '14 CHEVY 3" ALUM - CAT BACK DUAL K3122A – FOR 2014 – CHEVY/GMC 4.3L AND 5.3L GAS 1500 HALF TON (ALL CAB AND BED LENGHTS) – 3″ ALUMINIZED – PERFORMANCE GAS EXHAUST KIT – CAT BACK DUAL Instruction Sheet