Yea I assume he means run the wires through that hole. The 90 degree angle is a bit of a challenge.
There is no real thin spot like you mentioned on the dana 30.
I'm a moron....all caught up in basket's build and forgot we were dealing with a 44 here. I have used that air line hole before for an ARB. I haven't touched a TJ 44 in awhile though, so I would need to see it.