No wagons after 66. Why?

Interesting that in 65, the Dart beat the nova and knocked on the door of the fairlane.

66 was a body style change for the nova (but not the Dart/Valiant), which probably accounted for the sales surge.

Also interesting to speculate is the Dart/Valiant body style change for 67, produced a similar design to the 66/67 nova, and may have enjoyed a similar sales spike.