I did check out Lt. Dan's build. I read a lot more than I post lol. My truck is mostly stock for now, but it does have an intercooler. I'm actually tearing down my spare 7.3 next weekend and getting that to the machine shop soon to get worked over. Eventually not enough power will not be an issue for my truck (and I'll start a project build eventually). A transmission build is also in the future. I aim to keep the auto, which is not something I thought I would ever say. I have only had a couple of autos in my lifetime, I tend to prefer manual shift. However, this is a multipurpose truck for me. It needs to highway tow and still be fairly off-road capable. I've actually taken it up the dunes at the Imperial Sand Dunes in Southern California. I also have taken it down to the Baja 250 races down in San Felipe and ran it through most of the course (not actually racing, just goofing off before and after race day). The auto is especially nice when sitting in line for 4 hours waiting to get back in the states...
Yeah, I've seen the GVWR and GCWR of the newer trucks. Absolutely insane capacities, and I might want to upgrade if I were to tow heavier than 12k. But I don't foresee ever wanting to get a trailer past 30 feet in length. I like to be able to get back into areas not really fit for trailer camping. Trailers get to be a pain to maneuver in tight spots once you get past 30', IMHO. Also, I don't ever want to deal with DEF, EGR coolers, etc.
So, 4.10s might be good for me, but I'd rather go over just a bit. Maybe 4.30?