[skorpioskorpio]

you're actually quoting me not Jim, but you should be fine with the Saginaw type pumps, particularly if you are running a reticulating ball steering. The problem is really about using the ubiquitous Mustang type rack and pinion which doesn't require (or tolerate) the pressure levels that the hydroboost requires. Even the newer type mini pump can keep a hydroboost happy. The only time you need to really think about the Heidt's pressure control valve is when you are trying to run a low pressure rack with a high pressure hydroboost.

I haven't run mine yet, and while I do understand the hydroboost does make noise they were also used in various Cadillac models so I can't see where it would be some crazy noise level, the caddy crowd would never tolerate such a thing. Even if you search for "hydroboost noise" on youtube what comes up is what sounds like power steering pump noise and happens when the driver hits the brakes *OR* steers.