Does anyone know what the dimensions of the factory "dash kit" are on the navigation? Not the screen size but the opening in the plastic that surrounds it (see the attached pic). I read that it was not a standard din size and that's why people use aftermarket kits like the scosche, but I'm trying to plan out a car computer setup and was going to have a screen molded in anyways. So if the dimensions of the stock one aren't too far off from my screen, I'd rather get that as opposed to the scosche for better fitment and looks.

Also does anyone know the part number, or what the dealer charges for that piece?