It is noted for the record that you think it's a dumb idea to use the Navistar pump.
That would definitely make for an erroneous record. I never once said it was a "dumb idea". In fact, I did a user name search just now, and I have never once used the word "dumb" in any post, ever, until this very post just now.
I have only asked questions about why people are going through the pains of installing an IH pump and dealing with a non premolded lower radiator hose, because I'm having trouble seeing any obvious benefits other than the filter boss, which you said is only a fringe benefit, not a factor, in your decision.
I'm just trying to learn why... because my searches about the topic have come up empty handed as far as any proven benefits. There is a big difference between asking questions versus condemnation.
And when someone does answer the questions, but the answers don't make sense to me (like how cast iron bolted to an aluminum cover with a common contact of water in between them is less dissimilar than aluminum bolted to aluminum), I have to ask again, until I understand. That is no more saying that it is a dumb idea than it is saying I am dumb because I don't understand.
I've read posts about the IH pump leaking, and posts about making sure to remove a check ball to take out the original O ring and replace it with a -205 Viton O-ring, and posts about how some lower hoses that were once thought to work ended up not working.
I haven't read (yet) that someone got 250,000 miles out of an IH water pump, whether on a T444e, a 94-97 (where the IH pump retrofits easier) or on a 99-03, which is what would really interest me to know.
One thing your experience with getting 8 years out of your stock Ford water pump (2003-2011) versus 1.5 years out of your CarQuest replacement, is that the Ford water pump is likely to last longer than a generic one from a chain auto store. You are not alone in that report... I've read that 100 times.
But how does one infer from that common experience that the IH pump will be more reliable than the Ford? Just because it is IH? We have enough history to know that IH is not infallible. Just because it is cast iron? We have enough history to know that when gas engines came with stock cast iron water pumps years ago, everybody "upgraded" them with aluminum ones. Ford Motorsports still advertises aluminum water pump upgrades for the older iron engines.
So the record should reflect my curiousity, not my condemnation. I'd like to know whether or not the IH pump is a more reliable water pump for the 99-03, and why. If the reasons put forward make logical sense, and the installations prove to be more reliable than the genuine Ford stock replacement, then I'll consider getting one too.
As of now, the only reasons I'm hearing are that people hope or assume it will be more reliable. That's ok, because none of us can predict failure... but what is it about the IH pump that gives people more hope than the Ford pump? Substituting an unproven solution because a previous solution failed seems similar to putting in an Auto Zone pump because the CarQuest pump failed.
Are there reports of high mileage achieved with an IH pump on a 99-03 without problems like leaks or impeller failure? Are there attributes about the IH pump that haven't been mentioned that I may have missed? That's the kind of info I'm looking for.