Hi. I am new to the forum and have enjoyed reading the posts.
I thought you might like to see photos of my X50 install which involved complete removal of the blue LED display which I permanently mounted in the rear view mirror of my Infiniti.
Here's the site with my shots: http://6mt.net/forum/showthread.php?t=16478
I can still easily use all of the functions of the Passport and it's completely out of sight from either of the front seats. It's clean, neat, and works.
And no, I don't recommend anyone attempt to try this. Let me know what you think.