The 2006 Chevrolet Silverado 2500HD LS 2dr Regular Cab LB 4WD has a standard 6.0 L, 300 hp V8 engine with 5 speed manual transmission.  This trim has 2 doors, seats 3, and offers standard air conditioning, cd player, and ABS brakes.  Power door locks come as an option.  Finally, towing capacity maxes out at an 15800 lbs.