This listing is for one 2012 Ford Mustang Shelby GT500 8.8 Solid Rearend Axle Assembly With A 3.55 Gear. This one did not come equipped with the SVT Performance Package, so it does not have a torsen differential. This is not brand new, but a good used functional take out. Please see all above photos. What you are seeing is what you will get. Any questions please feel free to ask. We look forward to your business