That's a low mile 7.3! How hard is it to change being on the bottom?
The pump was not too bad to change. I mentally prepared myself for it to be a PITA but it wasn't that bad once I got into it. Spent about 5hrs, working slow due to being during "quiet hours" at the house (I use to not be a fan of detached garages...now I am). Once you get the coolant resi, fan and fan shroud out of the way there is a good amount of room to work. Only bad thing is if you don't have a top side creeper like me then you spend a lot of time standing/kneeling on the front. I forgot to see about renting a fan removal tool but I was able to use vice grips wedged against the block and clamped to the lip of the pulley in order to allow me to back the fan threads off. So no other special tools other than a torque wrench of course were needed.
Being on the front it wasn't as bad, but when I had to do turbo work a few months back that sucked working at the back of the engine valley under the cowl.
Doesn't it have a lifetime warranty if ford did it?
After you posted this it got me thinking, so I went back to the paperwork to see- 12 month 12,000 mi warranty listed. As stated parts carry manufacturers warranty but not sure about what it is for the motorcraft pump. The new pump has a lifetime on the part, so if I can remember that and find the receipt I hope I can get a replacement in 5 or so years when I probably have to do it again.