1973 Duster steering advice ?

[Cythomas]

Hey guys!

I am wanting to put a new steering kit in my 73 Duster, I like to put a Borgeson power steering box in my car.
First question is when I purchase the box do I need a small sector shaft or large sector shaft ? Since I will be using my 1973 center link, what tie rods ends will in need thinking on using PST suspension steering

 

[tonysrt]

I have put in 2 boxes with the large sector shaft. 73 should have a large sector shaft, but in an almost 50 year old car double check because you never know.

 

[KosmicKuda]

All Mopars went to the larger sector box in model year 1973. An easy check is to measure the sector shaft diameter. You should be able to slip calipers between the pitman arm and casting. Small sector is 1-1/8" (1.13), large sector 1-1/4" (1.25).

You can reuse every other steering component on your car unless you want to "upgrade".
Like 1974 and newer C-body tie rods and sleeves. 11/16" vs. 9/16".