Even though my stock differential feels fine, I was wondering if I should do a total rear end swap with anothwer car to keep my gear with getting a new car. Or is this part something that should last last well past the other motor/drivetrain parts. Even though the rear with more miles has the original diff, all the bearings are new from gear install. It would just be easier to swap the WHOLE rear than reinstall another set of gears and have to buy them again. Does the stock one use clutches like some aftermarket or is it more the teeth style. Thanks for any input on experience.