I have spent some time searching but haven’t ever found a direct fit wheel unit bearing replacement that comes with the 5x5 bolt pattern, or a 5x5.5 for that matter. I think that is why people not wanting to stick with the 5x4.5 go with spacers (5x5) or a manual hub locking setup such as the Yukon wu-08 (5x5.5)
I'm not aware of a direct swap. Anything that gets one to a different bolt pattern is going to be an ordeal of some kind.
I've got a JK and a TJ...they look really similar (aside from the bolt pattern). Are the axle splines different? Or is the opening in the knuckle different in some way? I wonder why they changed this aspect. They no doubt had a mountain of dana 30's & bearings etc, why redesign this component? Probably kickbacks from wheel manufacturers (or spacer manufacturers).