That article is crap. They mention the use of a Dart grille when it is clearly a modified Shark Tooth grille...
View attachment 1716308909
"Chrysler decided to set the Mexican Super Bee apart from the Duster by using the front grille of the
U.S.-spec Demon. The Valiant Super Bee was further updated in 1972 and 1973, to the point where it became a Plymouth Duster with a Dodge Dart front fascia."
Then they state the specs of the later version based on the USA Aspen/Volare while showing pictures of what we call a Dart Sport...