shouldn't need to replace teh t-bars for a while. even if you have an ARB and winch they should last a while. stick with what you have, and when you notice the sag in the t-bars then get them. you should only need them if you get the ARB and/or winch.
kirk
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Synchro (aka Kirk) 2000 Xterra SE, Alpine Green, 4x4, ARB, 32" BFG MTs