What are some examples from that era that were rounded teardrop shape? Seems the Superbird/Daytona is still more aero with the nose cone than with a stock Charger or Roadrunner.
Sorry...to clarify, a teardrop shape like an ugly Ford Taurus, which came much later, was eventually discovered to be more aerodynamic. There were really no contemporaries of the Superbird that met that description.