So I'm thinking of going toward the iPod route with the Ice Link setup. I heard Best Buy is selling these, but I would like to know if someone out here that has one, tell me if this would work with my 2004 4.4i w/ NAV and DSP? Also, would I only have to purchase this, and nothing else in order to get things working?

http://www.bestbuy.com/site/olspage....=1108124556237

Thank you!