Advance Adapters Four-Speed Atlas Transfer Case vs. Jeep NP231 T-Case
 

Back when I was the tech editor of Jp magazine, I did a lot of work at a local shop where my buddy, Jay Miller, was the shop foreman. Jay had a really cool ’97 Wrangler that he used off-road almost every weekend and was continually making upgrades to. Whenever he was doing an upgrade,



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