hey

seeing as chinasoong doesnt make a locker for the rear of my vitara, i am thinking of getting the front one and the compressor and all the gear for two lockers from them then just getting a genuine arb rd74 from somewhere for the rear.
so my question is where should i get the arb rear locker from? lowrange off road has them for like 850US but im guessing about 100 bucks postage, how much are they at an arb shop here?
Which US sites have you guys used and recomend?
thanks alot