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I bought a full set of 12” brake rotors for a 94 without J55.
I need to send the fronts back as I now have a j55 set up.
I cannot tell the difference between the fronts and rears, and there’s no part numbers on the boxes they came in. So, I’m not sure which pair to return.
These are for a car without the drum style so visually they’re identical from what I can tell.
A quick way I cant tell you but I just looked at the Auto Zone web Page they give the Detentions of the Different Rotors in Millimeters so you might need to do a conversion on google or Bing