Chrysler didn't adopt RDS in their OEM radios until they went to the oval faces. The 2000 still takes the rectangular face. I do not know if you can adapt a 03 or newer bezel to on 02 or older TJ, but all the Chrysler plugs are the same. I swapped my basic cassette deck out of my 2000 TJ for a cassette deck with the CD changer controls becasue I wanted the EQ. I run music with a cassette adapter from my blackberry and i swapped the RBK CD player out my current 05 TJ for a RAZ CD Tape combo and it works fine. Hope this helps.
I would just buy an aftermarket head unit, it's gonna give you better overall performance, plus who wants to carry a book of CDs around anymore? Buy an iPod and get a head unit with a microjack.
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They do make an adapter. It won't fit without one. You'll also need a new bezel or modify your old one (fiberglass) for the rounded corner radio for the seamless fit. Not sure on the screws specifically but I know people have done the swap so either some will fit or there's a way to adapt it.
If you can't take a nano-second to press shift/period/etc. and make proper sentences and paragraphs, I don't know if I can take a few minutes to respond to your topics... It doesn't have to be perfect by any means, but a little effort goes a long way.
Get an aftermarket cheapie from Crutchfield - they have decent headunits for around $100 bucks. They include the wiring adapter and the metra install kit for free. Can't beat that! Sound will be much improved and even the cheap ones now include support for WMA and usually even have an ipod jack.