P/S BOX

up to 73 will be the same, that's when the sector shaft went to the bigger 1.22" (the pitman and associated linkage is also different).

while there are some outward differences, pretty much all of the car lines will bolt up-- there are small details on the supply/return line angles that can differ.

that being said measure what you have and confirm before buying. a lot can change in 58 years.