Bill, Joe Henderson replaced his kenwood monitor with something that was a direct fit. You could try to PM him and see if he has a model number.
Any monitor will work for the Aladdin. Joe also added a second monitor near his drivers window just for Aladdin info. The Aladdin uses a "Video Coach System" box that sends the video signal to a display. You just need a display with an RCA type input.
In my coach that box is in the compartment above driver's seat.