Edelbrock E-FORCE Supercharger Stage 1 Street System [TVS Series 2300 | HP 334-364 | Torque (Ft-lbs.) 380-397 | No Tune] (2007-2013 Silverado & Sierra 1500 4.8L & 5.3L V8) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS