I have a 19" Dell that I decased, and will use the vesa mounting screws on the back into a peice of wood, like above in the first example. I will then use pocket screws to get the wood mounted in my cab. Did basically the same on my jukebox too.
Pictures of the decased LCD for my cab -


Placed the old case, reassembled without the guts, on a coworkers desk to replace his monitor.

Picture of the same type of idea from my jukebox while building it, LCD wasn't decased for it -

