What I remember reading is that most ford 5-lug passcar wheels from the mid '60s into the '80s will bolt on; they use the same bolt pattern. However the center hole is a little larger, so the wheel won't index tightly on the hub center like stock Mopar wheels.
I have 1968 Mercury Cougar mag wheels on my '71 Challenger; they worked fine.
I understand that most 1970-80s Jeep 5-lug wheels will also fit. Since you are just using them for rolling around, the hub size difference shouldn't matter.