1969 GTS 383 With Power Steering

Well, I was there. Worked for a dealer in '68, and with all the paperwork in front of me, I ordered my '68 cuda 383, 4-sp. P/S was not available. That was about January, car came in about May. I now own another '68 cuda 383, 4-sp car that has factory P/S (I have the window sticker). The difference seems to be that my present car has a later build date. I am guessing that late in 1968 Mopar found a way to put P/S in these cars.