This isn't hard. Try and find you a 2012 JKU or JK sport(To get the new 3.6L pentastar. The unlimited will be a bit more. But, depending on the options, you can probably find a nice used 2012 with barebones for around 20. (Soft top, no upgraded stereo, non rubi, higher millage)How many miles is to many? I want to buy a used unlimited for a daily driver, only off road it will probably see is country roads and 2 track from me hunting. My budget is under $20K