03-07 LS Vortec Standalone Wiring Harness Drivebywire W/4L80E 4.8 5.3 6.0 EV1 US Jack Pads H-Series hood exit race header

H-Series hood exit race header (4-1 Megaphone) features a true 4-1 Megaphone merge to create equal exhaust flow

Includes Adapters

Short runner design

6psi spring (Installed in BOV)

CNC machined 6061 billet aluminum

03-07 LS Vortec Standalone Wiring Harness Drivebywire W/4L80E 4.8 5.3 6.0 EV1 US Jack Pads H-Series hood exit race header03 07 LS VORTEC STANDALONE WIRING HARNESS DRIVE BY WIRE W 4L60E 4. 8 5. 3 6. 0 EV6 APPLICATION: 2003 2007 CHEVROLET, GMC, CADILLAC AND HUMMER TRUCK ENGINES (DRIVE BY WIRE ONLY) WITH 4L60E OR 4L80E TRANSMISSIONS. PARTS INCLUDED: Complete Engine and Transmission Harness, Instruction ManualNOTES: These harnesses are designed for retrofitting '03 '07 Vortec engines (4. 8, 5. 3, 6. 0 Liter) and 4L60E or 4L80E transmissions into older muscle cars and street