Very likely, yes. You should go to the TJ tech section and use the search function. Lots of threads that you can learn from.
As to your last question, most TJs can take 2" of suspension lift without changing much else (well, longer shocks and rear bumpstop extensions but those often come in the BB kits). Changes required to run body lifts are pretty minimal also, although above 1" most find those hideously ugly. Short story is this is not a cheap hobby.
Better starting question might be, what size tires are you looking to run?
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