Just my experience, when I swapped the suspension from my 75 Duster to My 68 Cuda the steering box was different and I had to use the box/center link/idler and pitman from the cuda. The late pitman and idler enter the center link from a different angle-I don't remember which was top or bottom and the output shaft size of the boxes are different. The duster was manual steering and that wasn't gonna work with 255/50-17s on the front, so swapping the box/pitman/center link/idler wasn't an option.