Jeff I had the 440 installed Nov '09, we had one in our plastic coach and I wouldn't be without one. Way more information than the Pro Driver and more user friendly. The least expensive way to go is to buy the software and use a mini laptop. For the newer coaches they can overlay the information on a present video feed ie: backup camera etc. My bus didn't have the right electronics to do this but I would have loved to do it as it is way cheaper than the way I went.