V-6, upgraded suspension, locking rear differential. Depends on what type of off road driving You do, if it's extreme then yes the rear dif lock would help out a great deal, some even get a locking front dif, if you like to drive fast off road or just want a better ride then yes the suspension would help that too however, there are plenty of after market kits that are better than the TRD suspension if you don't mind shelling out a couple of grand
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