Chrysler PWR steering

With the Chrysler power steering unit - i read that most people were saying the pressure was too powerful? What was this in regards to - hooking it up to a stock steering setup?

I want to run rack and pinion, however I'm going to use a GM unit. What sort of pressures are the Chrysler units putting out in relation to the Ford and GM units?

Just seeing if i could use this GM rack (as I know its proven to work well for my conversion) and if I could use the Chrysler Pwr steering pump would save me making up brackets and finding new belts to suit the GM pump. If pressures were around the same I don't see why not.