that's quite a move, not sure I wuld want to do that, also not sure how legal it would be.
But if you manage it, it will be quite a cool effect.
Would look cool if you blank out the one underneath so only the digital one could be seen.
The Chrysler Pacifica has an LCD right where you want to put it, only smaller:
With a bigger, custom screen, it can be made to look awesome.
Now, can't you relocate the stock, tiny screen closer to the rearview mirror perhaps? Maybe embedding it in it? Or maybe to a side vent custom mount?
It would look better without the stock red display there, IMHO.
That looks pretty cool. I would like to be able to show gps on mine as well.
I just got my obdII today so I haven't tested it too much. I'm really not having much luck with it. I finally got it to connect but it keeps dropping the connection. I got the RPM displaying for a bit and it wasn't too slow but not amazing.
I don't know about relocating the display, it's all one piece as far as I know.