All 6 gauge clusters have MyColor. You need to make sure that your car has the wiring harness for the 3-button Message Center controls. Pop out the blank that's on the left side of your 12v outlet. If you have a harness there, your car is prewired for the MyColor Message Center.
Once you get the new cluster and buttons, simply plug them in and take your car to the dealer to have the build data flashed to your new cluster.
In order to do this, they will require that you already have two keys for your vehicle. Get the second key made now before doing this, so that way there are no issues when you take it in.
Most 2005 mustangs are prewired for the Message Center. In mid-2006, they stopped prewiring the mustangs that didn't come with MyColor from the factory.
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