Depends, a good chance not. I will look at the manual for your radio to see how close it is to mine. The model I installed is in my signature. I REALLY wanted one with HD Radio, but I wanted a silver one that looked closer to factory more.
When you pull it out, look for the connecitons on the radio itself. If anything is hooked up to the RCA jacks, that will be a "cleaner" source for the amp, but not the "loudest" due to the factory radio supposedly being a 4v out, and the Kenwood being a 2v or 2.5v out. (I am just guessing here, I will try to double check.) Also, is your Crossfire a "Limited" or a "Base" I don't think the "Base" has the amplifier and/or rear subs. Main obvious things the Limited has is Leather, silver windshield, heated seats, silver door handles and side spears.