I never realized the 2X4 has a plastic version of the sheet metal skid plate that the 4X4 comes with. With the low hanging plastic radiator on the Frontier, I'd recommend putting it back on so it can deflect anything that might damage the radiator or alternator. Even on a street only driven truck, it would not be hard for a piece of road debris to bounce up and cause some damage.
Welcome to the forum!
Welcome to the forum!