8 3/4 Sure Grip Info

Yes it is and the Pro Series has bigger cones in it then a stock mopar sure grip. I can go around a right hand curve give it gas and both wheels will spin. It is definitely doing its job. But I like the Power Lok better since its rebuildable.
340sFastback: I agree, I've used Power Locs for years. If you happen to "puke" one, just rebuild it. If you trash an Auburn, it's junk!