Head rests

I have a 69 Dart Swinger 340 with bench seat and no head rests. I believe the car is all original and unrestored. A guy who was checking it out one day said that the seats were not correct because head rests were mandatory beginning in 1969. He wasn't being a prick, we were talking for nearly 1/2 hour about the car, he is retired from the car business, and seemed to have alot of good knowledge.

I'm just curiuos, anyone else with a 69 with or without head rests?