You may need to be a bit more specific in what you are asking. I assume you want just a jackshaft that performs no other function other than allowing equal shafts. I’ve not seen on from factory on an Australian delivered vehicle. My two LSD ones are from TRXX half cuts (will prob end up for sale complete with gearbox at some point but won’t be cheap) and the other two more simple ones (one spoken for and the other not for sale) came off imported ef engines out of “I don’t know what”.