First off, de-case your monitor.
Next, discharge the monitor (figure out how FIRST)
Measure the distance from one corner bracket (as seen in above pic) to the one on the oposite side. This has to be less than the indide width of your cab.
Now you will need to mount the monitor to something to rotate it. Most people use a wooden board. Some people make theirs very large. If you make it a little thicker, you can get away with it being very small.
I just fit a 21" computer monitor (I know, boo, hiss) into a Centipede restoration (relax, no side art and converted to
Growl). The inside width of the cab is only 23.75".
It's tight, but nice and smooth. 