Jan 2, 2013 at 9:12 AM
Trying to verify what spline my axles are on my 2008 Police Interceptor car (P71) with rear end axle code of Z5. I\\\\\\'ve been told by multiple sources that the PI cars came with 31-spline axels, but want to verify this as it has an open carrier not a Traction Lok dif. I want to upgrade to a Traction Lok differential, and want to buy the correct unit for the spline I have.