Of course I am going to say 60s :-), but probably anything 44 or bigger would be fine. All the Rubicon front axles are going to be driver drop so they won't work. Some of the Jeep Wagoneer rear axles were offset to the passenger side.
Front 44, 10 bolt, 60.
Rear 44, 12 bolt, 14 bolt, 60, 70...