First Off, Welcome to mp3car.
I would look around the reviews subforum for reviews on that monitor, I imagine there are some there since its a brand name monitor. The touchscreen from a nav unit idea has been done but it has to be from certain units, you can find more info in the LCD subforum.
The AM/FM radio can be done fairly easily, you just need a computer controllable radio recevier, Visteon or Directed, I forget the exact models but search around for those makes and you should find info, Also the mp3car store is going to start selling a similar unit.
Help this helps, Don't forget to SEARCH Good Luck