why not try the Harman Kardon Drive + Play? Yes, i know it uses fm modulaion but i have tested it myself. It is in no way the ultimate solution for your carputer fix but it will let you navigate your Ipod on an external LCD that you can mount anywhere in your car. if you wire the sound it will be decent. Best Buy currently sells these things for about 70 bucks. Another 30 bucks will get you the in line FM modulator. I would recommend it to anyone that doesnt want to get their hands dirty.