Just as an update I have installed both the Alliant and Eastern Industries versions of the IH pump. The EI is the one I got from Tycorr and installed in my X, the Alliant in a friends truck. Some of the data I have seen actually states the EI has a higher rated bearing set. Not sure as I have not seen the data with my own eyes but its what was stated in a discussion. There is a ton of info on these pumps and the swap/upgrade over on Ford trucks forum.
Here is one link that has a decent amount of info:
http://www.ford-trucks.com/forums/1109980-t444e-water-pump.html
The pump I traded with Tycorr that is the less costly of the two in terms of price tag now has close to 2 yrs on it and still it fine. Bob @ diesel site has a great full kit for those that want everything ready to go. It includes not only the pump but the billet housing, Tstat, 3 filters, he had custom fitted hose made so no flex hose for the bottom one or using a bushing as I had to for fit, all the bolts and heater hose. He even had ground down the extra boss and installed the tstat and housing. All you are left to do is install the pump and hoses. I have not done the math but it seem with the billet housing the fitted formed lower hose the bolt set t-stat and filters $399 is not a bad price.
I hope this is the last pump I have to install for at least 200K. We will see. It has already beat the every 12-18 month replacement for the ford pumps. OF course part of that could be I did not have a bypass filter on it. But I had done full flushes every time I replaced the pump and already ran Cummins ELC coolant. I seriously tend to wonder if the pump they put on at the factory is manf at a different place then the ones we get as OEM replacement. Sort of like the motorcraft batteries, same company but the originals are USA manf and the replacements are Mex and a apparently noticeable difference in duty life according to what I have read. Who knows !?! Its getting hard to by USA manf stuff anymore even if you are willing to pay the premium for it.