2006 - 2007.5 Chevrolet GMC Silverado Sierra 2500 3500 6.6L Duramax LBZ Complete Engine (Injectors, Turbo, Injection Pump, Belt Driven Accessories), Allison 1000 6 Speed 4x4 Complete Transmission, NP261XHD (Manual Shift) or NP263XHD (Electronic Shift) Transfer Case. Includes engine, transmission and transfer Case wiring harness. (Engine & transmission mounts, fuse box, throttle pedal w/ pigtail, driveshaft yokes, transfer case push button selector and module with pigtails.) Due to high demand the ECM, TCM and Intercooler pack (radiator, air charger, upper and lower radiator supports, trans cooler and AC condenser) is available at additional cost. Prefect for hummer swap/ Lift out