For those who have bought Saleens with the infamous "torsion" diff option you might want to check your car to see if it actually was installed! You can guess my surprise when I puller the cover off and "stock" diff was still there. Factory shims and all. It had torsion written on the cover! What a day! Took it apart to replace a bearing and find this. Thanks god I have a nice auburn pro that is 28 spline to go back in it!