Two Pickups with some similarities, but otherwise different in most aspects such as the model year, horsepower, starting price, and ground shadow size. First of all, there is a $4,165 difference in the base MSRP. The 2016 Ram 2500 Regular Cab, a newer vehicle by three model years, has a higher starting price than the 2013 GMC Sierra 1500 Extended Cab. Also, the 2016 2500 Regular Cab pulls more horsepower than the 2013 Sierra 1500 Extended Cab. And finally, the body structure of Sierra 1500 Extended Cab is slightly larger than that of the 2500 Regular Cab. Among similarities are the body structure, height, and maximum occupancy.