Two Pickups with more similarities, such as the body structure, ground shadow size, height, and maximum occupancy, than differences, like the starting price and horsepower. First of all, there is a notable difference in the starting price of the 2016 Chevrolet Silverado 2500HD Crew Cab, which is $4,685 less than the base MSRP of the 2016 Ram 2500 Mega Cab. And finally, the 2016 Silverado 2500HD Crew Cab produces fewer horsepower than the 2016 2500 Mega Cab. Among similarities are the body structure, ground shadow size, height, and maximum occupancy.