Seats/Seat belts for daily driver

Turns out head rests were option in 67. Agreeded going to be hard to find.

68 up was option and then standard at some point.

Reason I point toward later year dart seats is that way it will be mostly plug and play.

As for 3 point seatbelts, they would need to be properly engineered to make things safer. Later year darts probably had them stock, 75 76 maybe so if you bought those and duplicated the mounting points you should be good.