Interesting about the portal tek...
Nothing on their site (that I have found) says anything about having to flip the axles... They claim that they are not at all like the volvo, or the mog for that matter. They claim that they are all new technology...
Oh well, not the point of this thread.
As for the Hummers H1, Oilworker, you can still buy the Army and Marine Corps HMMWVs, the military forces are not allowed to sell them anymore, but you can find them from when they still sold. There are a few guys around the US who have some. (various prices and conditions) If you only wanted the axles then I suspect that you could find one that is not running, or darn near trash, and pick it up for anywhere from 5K to 15K.
I have personally thought long and hard about picking up one. They are rotten to drive, and very loud on the roads, plus they do the military standard speeds of up to 55 MPH, which stinks. I may still buy one just the same, something to drive to work and such. Everyone would wonder how I ended up with one... hehe