sunguf

i guess the manual/auto comes into play when spinning the tires.

Centurion96

#3 Be careful, dealers want to sell you whole axles and shops may fill your rear end with all used parts. I've experienced both, so I learned how to set up rear ends myself. The last 4x4 shop I used swore they put all new parts in but when I opened up the pumpkin I found that they had used a cold chisel to set my pinion nut and my pinion shaft retaining bolt. I don't care who you have do the work as long as you take time off to be there and observe their every move. If you're not there they may very well short shaft you. If you do use a dealership, make sure they are willing to pull everything including the pinion gear when working on your rearend.

#4 I've had very good luck with the Auburn Pro and I've heard only good reports on the True-Trac. I have my Auburn in a 6000 lb vehicle towing a 5000 lb boat and it is holding up very well. I doubt that either one in a Mustang will fail. I got my Auburn Pro for a little over $300 and that included a complete shim kit.