I'm going to call keyboard wizard on this. Too many things don't add up. Take a look at the pics on his so-called expedition vehicle site. One shows him throttled up in the sand. Except, he's only shooting one sand rooster, off the passenger side rear wheel. So he's not running any sort of LSD or locker. He claims 7 feet of water depth capability, but even including his lift, that's all but the last 8-10" of cab top, best case. Then he's on here complaining about his Titan as a 1/4 ton, but on his site, he blogs about how he went across the country off-grid, only stopping for gas, and everything works perfectly. And now he wants a "full flow" rearend? Something doesn't add up. My gut says, keyboard wizard.
And, for the record, the Dana 44 is plenty stout for all sorts of big meats and high stress. I've seen them under Jeeps, Broncos, F150s, and GM trucks doing just fine with 35s, 38s, 40s, and 44s. I've also seem a kid I grew up with trash multiple 3/4 ton diffs (fronts and rears) by doing stupid stuff. Somewhere in a box, I've got a spider gear which looks smooth like a bearing race from a high-power throttle response to a bound up rear wheel against a stump crossing a pond. Wish I knew where it was. I'd post a pic.