Stock 318's with Four Barrels from the factory?

The lack of emission laws in Mexico likely made 318 4 barrels possible there.

Aspens and Volares, and other J & M bodies, had a variety of options, including 318 4bbl and 360 2bbl, depending on the years.

FWIW, it surprised me years ago when I saw it, but I bought an OEM hood with scoop and factory holes in it off of a '73 318 Dart Sport (2 bbl) that was being parted out. Light blue with hood and over the roof side stripes in black. I still have it.