Me too. I don't push my rig anywhere as hard as @nvrstuk but my stock Explorer pump etc as described above has gotten me through the Rubicon twice without issue. My truck used to be too pretty for that until those trips. Lol.I'm using stock Explorer with 35" tires and it works great. If I ever do upgrade, I'd go with a Lee's reworked Explorer pump turned into a saginaw...but I doubt I'll ever need to.
I created a frankenpump many years ago out of an Explorer p/s pump casting and Super Duty guts (from a donated SD pump, a variant on a C3). It boosted max output pressure from IIRC about 1300 psi to around 1800. I didn't have a way to measure flow rate. I ran it for awhile but the shaft seal blew out. Probably due to it being dried out, since it was the one on the S/D shaft and should've been up to the task. Still have it on my parts shelf. Back to the same (fingers crossed) used Explorer pump I've been using for over 20 years. It can't last forever but it seems to be threatening to.










