Make sure you get your pitman arm situation figured out first. Later PS boxes had a larger diameter shaft and early pitman arms do not fit.This can be a challenge with an early b-body. If it's the smaller shaft you're good.

'64 Sport Fury, 528 Hemi, FiTech EFI, 4-speed, 4.10 Dana 60
'57 Belvedere 2dr sedan, current project in process
'19 Cherokee Trail Hawk Elite
'03 Ram 2500 CTD HO, 6-speed 214,000 miles and still going strong