So I've decided that I'm going to replace my current monitor in my cab with a Sony P1130 pc monitor.
You can see it here:

I plan on decasing it and mounting it in plywood as like this:

I will saw a piece of plywood in the shape of the original mounting brackets for the 25" monitor and then saw a hole in the middle of the board for the 21" monitor and mount it in it.
A few questions though.
1. Should I mount to the over or understide of the plywood to get the correct mounting height? I am using a flat panel display.
2. Should I use 1/2" or 3/4" plywood?
3. If I paint the plywood black and mount to the bottom of the plywood do you think it will look good?
I'm open to using something other than plywood if someone has a better suggestion.
I've seen some people do this on the forum before, but I can't remember the projects involved. A link to some examples would be very helpful.