I had an integration issue a while back with how to professionally get my Ipod to work with my stock head unit. No amount of tape adapters, or FM modulators would work. I did find a unit from USA Spec that allowed the Ipod to be connected to the stock head unit in the form of a 6 disc cd changer (6 play lists with less than 100 songs each). While this had it's draw back it worked for some time but started to work less and less leaving me with no happy music to drive by. My wife and I are expecting our first child in late July and had things we would need. Hmmm I though how about a Head unit with auxiliary av in to watch the baby while on the road whether day or night. And of course add to that the seamless integration of my ipod and well I'm a happy camper. I have yet to purchase the camera's for back up and baby watching but the lines are run. The head unit installed and it very clean, likely one of the easiest installs as far of lack of problems. I didn't use the supplied trim ring as there is very little clearance and it fits super tight.
Aaron