243,085 '69 Camaros were produced of which 242,750 came with headrests.
http://camaros.org/headrest.shtml
<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body"> 1969
For 1969, headrests became a NHTSA requirement. Although the regulation didn't actually take effect until January 1, 1969, Chevrolet built all 1969 Camaros with headrests unless a special RPO was used to delete the headrests. From introduction in August, 1968 through December 31, 1968, RPO A82 was a factory default option that added an additional $16.90 to the window sticker. After January 1, 1969, the base price of the Camaro was adjusted to include the option.
For cars assembled before January 1, 1969, customers could order the "Headrest Delete" option (RPO AR1). The front seats would be assembled with the headrest mounting hardware on the seatframe, but the headrest itself was not installed. In its place, a cover was installed over the escutcheon to plug the hole. Only 335 customers opted for RPO AR1, making it extremely rare 1. An example is shown on the window sticker below.</div></div>