I tried searching axle codes but didn't come up with anything. Is there a sticky or does someone have them by chance? I know when I had my 97 Mountaineer & 97 Cougar D before the numbers meant traction lock. I'm assuming the same applies to Mustangs. I still have a Chilton's manual for the 89-97 Cougar/T-Bird but I don't know if the axle codes are the same for Mustangs.