Has anyone ever tried one of these: http://cgi.ebay.com/ws/eBayISAPI.dll...category=32826
It has a shroud so you can install it in your sunvisor. That's about the size that will fit in my sunvisor, but I don't know the thickness or video quality...
I'm gonna use it for a rear facing IR camera
you can get it for cheaper if this is what you really want. just visor LCD I saw them for 120 in some places.