There is an ebay auction for a 72 set of bucket seats. They show no headrest (that slide) . I thought all original buckets had adjustable headrests.
Are these factory? Also the bid is up to $255, can I get a used set for less than that anywhere? Thanks.

paid 75 bucks for mine ,,, and another $500 to have them done ,,and they went back 2X

Head rests were standard starting in '69. Could have been removed in the past 30 odd years.
I know where you can get a set of '72 bucket seats (that need recovering) for a bit less than that. PM or Email me for details.