Yeah not sure I've seen a post from someone who did it themselves.
As far as I know, if you went with a new
axle hub to hub, it's just the brake wire and leaf springs, depending on whether you go with new springs also. Even though my new
axle came with new leaf springs, the guy who did mine didn't feel comfortable welding the new springs onto my frame, so he kept my old springs in place and connected them to the new axle. Not ideal as I was hoping for new springs, but I trusted him and wasn't going to argue.