We've talked about this before,but for 1969 Chevelles,only 774 Chevelles were built without headrests....and 4432 '69 Impalas were as well according to Chevrolet.
1969 headrests weren't really optional,as they automatically came with the seats,but a $16.90 credit could be issued,known as RPO-AR1 Less Head Restraint when either Bucket seats or Bench seats were ordered and the customer said No headrests please,sometime during January of 69.
Headrests later became mandatory sometime during mid Jan. of'69
I've personally only seen two '69 Chevelles built w/o headrests.
Jim Ferrons old car for one..
