Check out jeep mopar parts you can do a new not used rubicon 44 for about 2400 . That what i just done on my sons welding in some gusset and rock slide outer housing will be in it for about 2700 all said and done no its not a pro rock . but put you with locker in front and a strong axle .
add a arb later with cvc axles and you in for 4700 but only if you break it .