I would imagine that the price would be considerable to doing it in the 330i, after production. In which case, you need the monitor, ~$1500, the cd-rom, $320, the computer was like $400 or so. Dont' know about the wiring harness. The TV tuner from BMW is a little under $500, but it shuts off when the car is in motion. You can get the HighSpeedometer one, and it is on no matter what the speed.