Two Pickups with some similarities, but otherwise different in most aspects such as the starting price, horsepower, ground shadow size, height, and maximum occupancy. First of all, there is a notable difference in the starting price of the 2017 Nissan Frontier King Cab, which is $8,105 less than the base MSRP of the 2017 Ram 1500 Regular Cab. Also, the 2017 1500 Regular Cab has a more powerful engine than the 2017 Frontier King Cab. In addition, the Frontier King Cab body is significantly smaller than the 1500 Regular Cab, and in addition to that, it's also slightly shorter. And finally, there is a difference in the number of passengers; the Ram 1500 Regular Cab seats two more the Nissan Frontier King Cab. Among similarities are the body structure and fuel economy.