I have a 2006 Frontier LE 4x4 and I'm having a hard time finding rear bearing hubs with the spindle/ lug mounts . Rockauto only has the rear bearing and I think I need the outer bearing assembly. Also what is expect in replace the rear bearing assembly? Am I going to have to remove the axel? I ordered the fronts and seem easy since there's nothing that needs to be pressed into place. Is that the case for the rears?