I am picking up a 2006 Ranger Aluminum I beam trailer with oil bath hubs. I want to pick up spare hubs for a 1400 mile trip, but the trailer is in FL. Unfortunately, I do not know what hubs to pick up. I know the PO had put on K71-G00-54 Dexter brake kits, but I'm still unsure of the bearings. Can anyone point me in the right direction? I appreciate your help.