Here are the screens I would probably buy now, if I was building a video mirror system:
Eonon L0607 | Car Monitors | Car Stand Alone Monitor
The only caveat is the plug location on the side -- the screen specs look better than the screens I have.
Here's a larger and higher resolution screen, with much better wire locations, but the screen contrast and brightness is slightly lower.
Eonon L0608 | Car Monitors | Car Stand Alone Monitor