Power steering

You'll probably have clearance issues with the pressure hose if you use a Saginaw on a 70-72 LA car. In the clear with the 73+ k-member. Either way def go with the Saginaw pump, you can even pull them off full-size GMs and trucks all the way up to the early 90s, only functional difference I've seen is the orientation of the return hose nipple. You'll still need the chrysler brackets though.

The assist is actually "too much" but some have had success shimming the valve to reduce assist.