I've run my modded pump twice. First, right after I did the mod. At the time I still had an OEM 77 power steering box and I was afraid that the extra pressure could damage it. Subsequently removed that steering box and sold it for an immense profit. Now 4x4x2 and not concerned. I installed the modded pump again when I did the 408 swap a couple of years ago. It worked fine until the seal blew about 6 months later. I reinstalled the junkyard pump that I've been running since 2005 or so and will not die. In fact it works fine, and honestly I couldn't tell the difference performance-wise between ancient junkyard and basically brand new Super Duty. I've read the stories of others with Explorer power steering pump issues but I've never had any, at all. I don't do extreme crawling, my tires are 35" and I don't have a ram, so that's likely part of it. Someday I'll probably replace the seal, most likely if ole' reliable finally gives up.
. I have several different configurations sitting around here in my collection.
