Stainless Works Long Tube Headers & X-Pipe w/ Catalytic Converters, Performance Connect, 1-7/8 x 3 (2014-2016 Silverado & Sierra 1500 5.3L & 6.2L) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS