Yeah, it's not really that big a deal. But, just found out more interesting information about this particular box - and the truth of how the current owner of the parts Jeep came to own it. The local 4wd shop's owner built up a Cherokee for his son. The box was a remanufactured unit from Napa. After the build-up, the Jeep had a problem with an intermittent wander. Before they'd fully diagnosed where the problem stemmed from, his son stuffed the Jeep in a ditch. After talking to him (the shop owner) today, I mentioned the wandering - he said THAT was the problem his son had, that it probably contributed to the crash. Great.
So now that I've got two boxes, I figured I may as well have them rebuilt - sell one or keep as a spare. Apparently, this is something that few companies want anything to do with - too much liability, the best I've been able to find is farming it out to a company in California.
I'd tackle to job myself, but considering my wife drives the Jeep on the street more than I do (we bought it as a wheeling rig, but she loves it), I'd rather leave the job to a more qualified individual.