Quote:

Didn't shoulder belts become manitory Jan 1 of 69, meaning prior to Jan it was an option. I believe this is the case with headrest but unclear on the shoulder belts.



Here is the 1969 dealer data book info from Hamtramck Historical.

Front shoulder belts were standard equipment (except on convertibles where is was an extra cost option).




Headrests were an extra cost option but "will be standard equipment at a later date" (which was Jan 1, 1969)