I don't know for sure about '69 but in '68 the option code was 634 and the read out on the window sticker price sheet is " Shock Absorbers-Adjustable F&R Control with a cost of $ 52.66. In my Bird that translates to a AC Delco compressor in the far drivers side front, a under dash control pad & AC Delco air shocks in the rear with hard to notice air lines.( not the white HiJackers ) you see in aftermarket installs. I have been told these are one of the rare options on a GM & most were aftermarket. If '69 was the same then it is possible ....