4.10 was available on all models in 2007 and only Rubicons in 2008. You can buy take offs for cheap. You also need to think about what size tires you are going to run. Let's say you go up to 33's, which is quite easy and inexpensive to do, then 4.56 would be better, especially in the mountains.
2014 JKU Copperhead Pearl
Too many mods to list. Too awesome to sell.