The oldest I could find was 1972.
Chilton book says 100ft/lbs for the castle nut, then tighten if necessary to align the hole for the cotter pin.
Make sure the hole in the knuckle and the tapered end of the ball joint stud are clean and free of all dirt. A small piece of sand or dirt will exert force on the shaft and cause it to break off. Not a good thing.