Depends what you want to do with it... If you wheel it hard enough, there is a whole laundry list of things that will fail. If you are not as intense in your wheeling, you will be very happy with your TJ for a long time with very few issues.
yea..the exhaust manifold in tj's has been know to crack...BUT i think it was just the older tj's (like 97-99) and i think i read a post that said you have a 2006 tj so i dont think you have to worry about the exhaust manifold because i think they fixed or solved it
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