be very carefull when ordering factory radios. the patriot and compass redesigned their computers this year, so you need a radio specific to your year and model. just tell the parts department that you can get one online and they'll most likely give you a discount to earn your business. look on mopar-accessories.com to get the MSRP of the part before going in. you know if they give you a lower price than that, you're getting a discount. if they give you a higher price first, then give you a "discounted" price that's the same as the MSRP you have, they're giving you what's called "bump list" first, and trying to sell it to you at list. go in informed.
unfortunately you're looking at a very expensive radio, and plan on spending about $2k for everything. you'll need an antenna kit as well as the radio itself. if you don't need the nav, you can save a little money by just getting the 430 radio (RBZ) instead of the nav (RHB).
i will caution you, however, that if you're looking to upgrade sound, this radio won't help you. you need to upgrade the speakers. consider upgrading to the boston system with the subwoofer in the trunk and the 2 articulating speakers. you'll spend less money, and have a more substantial difference in sound. the subwoofer really bumps!