A friend of mine told me about a ford 9 inch for sale that was setup for third gen camaros running circle track. He said it had a gold race ( I think that was it) locker in it. He said its a combo of limited slip and a detroit locker. It slips when going around corners but acts as a locker on the straightaways. He said the guy was selling it for $800 or $900. Anyone else heard of this...is it a good deal?