Head Rests
If you look on my webspage here Bench Seat, Headrests & Latches
notice the orignal '67 non-headrest seat back doesn't have the second horizontal bar that is on the '70 seatback to better support the headrest and strengthen the frame.
Here's a 67 that was at Carlisle in 2019. I beleive those are original to the car.
Some more 67 headrest images . Bench seats got a more squared or boxy shaped headrest although some people question whether the ones shown really came from a '67, but I think the answer is probably yes.
https://www.forabodiesonly.com/mopar/threads/1967-bench-seat-headrests.455309/post-1972845663
I had installed headrests in my '67's seatbacks, but it wasn't a great (the way it was done didn't have great support). Eventually I had ABC redo it using a 70 split bench seat back frames modified. The laer seat had latches for the seatbacks. That was the main reason I recall we scavenged the 70 seat frame.
If you look on my webspage here Bench Seat, Headrests & Latches
notice the orignal '67 non-headrest seat back doesn't have the second horizontal bar that is on the '70 seatback to better support the headrest and strengthen the frame.
Here's a 67 that was at Carlisle in 2019. I beleive those are original to the car.
Some more 67 headrest images . Bench seats got a more squared or boxy shaped headrest although some people question whether the ones shown really came from a '67, but I think the answer is probably yes.
https://www.forabodiesonly.com/mopar/threads/1967-bench-seat-headrests.455309/post-1972845663