Dodge Dart Lite

This is from the 76 Dart Brochure:
Dart "Lite" Fuel Economy Package (A31) (Dart Sport)
Fuel Economy axle ratio and exhaust system (2.94-ratio w/3-speed manual OR 4-speed overdrive transmission)

So it does not say an automatic is a part of the Fuel Economy Package.
But that does not mean it could not be ordered.