I have a 1967 El Camino I'm trying to restore. I want to keep the seat in it a bench and I don't know if mine is original for 1967. Did they have headrests in 67? I've never seen one. Here are some pictures of my bench seat.
http://i56.photobucket.com/albums/g199/kazubb/th_seat2.jpg (http://i56.photobucket.com/albums/g199/kazubb/seat2.jpg) http://i56.photobucket.com/albums/g199/kazubb/th_seat1.jpg (http://i56.photobucket.com/albums/g199/kazubb/seat1.jpg)
Is this the original seat?

No it's from mid 80's gm .

Brent-----That is an Elky bumper you have, and the guy did you a favor----tese things are pricey----heard one just went for over 800 on Evil-bay.

Headrests were an option in 66--------(far as my factory manual goes)
My 66 was equipped with a 67 bench from the factory, with headrests (took it out--not gonna use it)
A 66 seat will not have a seatback lock----67 will.
My 66 is a very late car (within 2000 units out of Fremont)
Came from the factory with
67 Dash and 67 Malibu woodgrained upper dash insert.
67 SS/Malibu 3 spoke steering wheel
67 knobs (lights, etc.) ignition switch bezel
66 Steering column
66 instruments and lower dash trim

Weird