Tim... . as little as possible. That being said... I know the motorized screens (which I'm not fond of as they block the hvac vents at the top of the dash) are about $500 so I know I'm going to have to pay north of that because it looks like I'm going to have to have some dash modifications... but I'm not looking to become an episode of Monster garage either. Got anything in mind?
If the Edge Attitude A2 was still around (or being supported) I'd get one so I could have have and a rear view camera... .
Any help is appreciated.