Seems like widening the rear fender is probably the way. I don’t see the front hubs working out, and the parts one is probably too far gone to the rust mites.
I’m not a fan of the style of wheel on duallys- would prefer something I can put a hubcap on but oh well.

1951 GMC 250 Open Express
1968 C10 Suburban
1971 C20 Pickup

My Dad told me "Son, never hit a man in anger- unless you're certain you can get away with it"