Originally Posted by ///MMB
It would be to far away from the driver to be a touch screen if it was where the oem screen is.
I do believe some companies make kits so you can put one in the dash though.
You can get an updated climate control panel that includes the heated seats buttons.
That's why they make the iDrive controller plus you shouldnt be messing with the nav while driving anyway. I would never install those type of kit on an M3. but then again, to each his own.
OP, it'd cost quite a bit to retrofit the OEM Nav into your car. I looked into this a while ago and the cost wasn't worth it IMO.