From what I have heard, it is not possible to put the Alpine upgraded system into a base system Jeep. Don't worry. That is good news. That system costs about $1,700. You can have a system that is just as good, if not better for far less. First consideration is getting new speakers. You can either go components, or get upgraded plug n play replacements for the (4) 6.5's and the (4) 3.5's. I'm on the fence as to what is better here... I went the second route with the Kickers (77KICK10's and 77KICK25AB's) for about $240 and installed them myself. The components are not too much more difficult. After that, you will need an amp and a sub. You can go one of two ways here, either get a 4 channel amp to power the speakers I mentioned above, plus a powered sub, or get a 5 channel amp and you will be able to power all 8 speakers and the sub. The deciding factor(s) here are likely how discreet you would like your system to be, as well as how much cargo space you are willing to give up. I, along with most people, don't want to give up precious cargo space with a big sub box (and also advertise to thieves) so I went with a powered sub under the front seat. It is less likely to get stolen and takes up next to zero space. It rounds out the system nicely, just like the upgraded Alpine, but won't go BOOM and wake the neighbors like a sub(s) in a big box with heavy amplification will tend to do. After you have made decisions on all of this, you will have to figure out if you desire to keep the stock head unit or not. None of them are very good compared with what is out there, but again, there is that thing about being inconspicuous, as well as how much you already put into it if you got more than the single din base stereo. Do you have nav? Do you wish to replace it and pay for it all over, less what you may be able to eBay your OEM unit for? I suggest searching the forum as you will find tons of other posts about how crappy the base 15 stereo is. I did that and ended up doing the Kickers, an amp, and the powered 8" sub for under the seat. It now sounds fantastic and I still have about 1/2 of what I would have in it had I gotten the upgraded system, while still remaining rather discreet. Search the forum and you will get a ton of ideas. Good luck. I just finished upgrading mine a couple days ago and although it isn't an audiophiles wet dream (it is a Jeep, what more can we expect with no top, doors off...?) it gets loud and sounds pretty decent without all of that base system distortion you are now experiencing! Search the forum. You will find all the answers you need!