The 2006 Chevrolet Silverado 2500HD LT1 4dr Crew Cab 4WD SB has a 6.0 L, 300 hp V8 engine with standard 5 speed manual transmission.  This trip has 4 doors, seats 6, and offers standard air conditioning, power windows, power door locks, cd player, and ABS brakes.  Options include power and leather seats.  Towing capacity maxes out at 15300 lbs.