Re: this might be a dumb ? but i am kinda new to this
the K-5 axles have the pumpkin on the wrong side too. You might be best off to see if someone is willing to swap off those 10s for a set of Dana 44s from a vintage bronco (I heard that Scout IIs ran 44s as well, I just don't know if they used a Driver's side pumpkin.) If all else fails, a Dana 30 from a YJ, TJ or XJ ought to work too, but they're a touch weak for the bigger meats. They should hold fine with 31s strapped on, but i wouldn't go much bigger than 33"