I wouldn't say I'm "back"
But I do try to check the forums when I have the time. Hopefully this winter or early next year I can dive into the refurbishment of the Argosy. We'll see
As far as I know on the Classic series (310, 345, etc) the inner wheel of the duallies was always a steel wheel. At least that is the case for our 310 and 345.
So for the Argosy motorhomes you should only need to buy four aluminum wheels, keep two steel wheels for the inner wheels and one as a spare. That does kind of keep the cost down a little bit.