hey i have a 2002 4runner with selver lined dash one of my ideas was not to take out anything from the dash instead . i was thinking of making a flip up cover that only covers the ac buttons and when you want it to open all you have to do is push it down and the lid flips up and you can see the screen. the cover should be easy to make with fiber glass but i dont know how to mount it if i made one. having a coil should be able to keep the screen up. and the best part of this design is that the screen is covered from the suns rays. so the screen wont go bad. its just an idea i think is worth giving a try.

or even better you can bring in the swivel action with the same brackets they use for tablet pc.. i dont think with idea will work for anything bigger than a 7 inch touch screen cuz if you are driving the screen is gonna shake and the bigger the screen the more weights gonna be on the bracket