i just shimmed and installed a j30 diff abotu 2 weeks ago. And i love it. got the dif for $70 bucks. Took it apart put the new shim and installed it. Whole procedure including removing the stock diff, took 3 hours.
It is awesome way easier to break the rear end loose.
if you can get a good deal on it. buy one, shim it, and you'll be golden
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Z32 with lq4 swap
Desert Street Scene || Dssevents.com
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