no my hubs are not like the old hubs, that are spun to eather lock or free.
Mine spin to lock or auto and 4x4 works at eather setting in high or low range.
have an 07 f-350 c/c longbed with leveling kit fender flairs rims and tires. i tow a 30' wilderness camp trailer and haul 2 4x4 quads on bed rack. want to know more about edeg juice with attitude. what intake is best for the buck.and is 4" cat back exhaust goodenouf to keep the egt down?