is something like a 6 dvd changer out there that works well with the avic n3? i cant seem to find one, maybe im just looking in the wrong places...i dont need anything crazy like a 12 disc or anything, just something so i can keep my nav disc in the changer at all times...

The nav disc must be headunit, not the changer.

But Pioneer makes the XDV-P6 DVD changer. Its a single DIN with a hideaway brain.