A lot of people think the "C" means c-clip but in fact it means custom. Chrysler order the axles from dana not completed so they got stamped C. What might make a difference is if you have a c-clip axle or not. I don't know if there was even a choice on Grands but on xj's there was. Look at the outer axle tube where it goes into the brakes. Is the tube the same diameter? If yes then you have c-clips. If it is visually larger then you do not have c-clips. Like I said I don't know what options the grands came with. I just know that my old xj was lucky to not have c-clips. It might make a difference on the locker if you have c-clips.
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