Beautiful illustration! As a historian, I'll note that the vehicle pictured appears to be more of the 73-77 vintage with the Ranger package coloring and stripe patterns along with the high-mounted side marker lights.
Actually, I need to correct myself -73-76. 77 has doors over the gas caps.
I am the co-owner of the Bronco in my avatar. It's a neat rig with some incredible history. In fact, there are two photos of it in the "Legends of Baja" currently on the forum masthead.