If there is a tag on one of the center bolts that will tell you what it is and what gear ratio and differential it has. You can remove all 10 nuts from the center of the 8 inch rear end with a ratchet, 9/16 socket and a 6 inch extention. The 9 inch requires a wrench to remove the 2 nuts behind the pinion housing and the other 8 can be removed with the wratchet.
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