The actual output is not really larger than the cutout. Put some text on the screen and mark up the edges with some tape before you position it behind the cutout to get it properly centered.
It will end up being mounted like this one:
http://www.nightfallcrew.com/wp-cont...110_183230.jpg
This is how I have done it and I have no problems reading the full display, as long as I am not looking from too large an angle (seeing as the display is not flush with the front).