Offered throughout the 2006 Dodge Ram lineup, the new Mega Cab is available in 1500-, 2500-, and 3500-series trim. Measuring 15 inches longer than the average full-sized crew cab pickup, the 2006 Dodge Ram Mega Cab features split-folding rear seats that open up 145.2 cubic feet of space for added hauling capacity. The standard engine on Mega Cab 1500 and 2500 is a 5.7-liter Hemi V8 with 345 horsepower and 375 lb.-ft of torque. Optional on the 2500 and standard on the 3500 is a 325-horse, 5.9-liter high-output Cummins turbodiesel whipping up an amazing 610 lb.-ft of stump-pulling torque.