According to what I have read here on the forum, You'll need the instrument cluster of course, and the dashboard switch for the Info Center. I don't think there is anything else. The pigtail to plug in the switch should be behind the dash panel already. Someone that actually knows for sure should peek in soon. What I know is I have the base cluster in my 2005, but the switch pigtail for the Info Center is there. The "My Color" thing is part of the info center menu. The Info Center computer chip is built into the upgraded cluster.
130 total pounds of Pitbull ruled by 8 pounds of cat.