Just curious as to if the stock 06 civic si nav units would fit our din flush?

http://automobiles.honda.com/images/banners/2006/civic_hybrid/interior_gallery/large3.jpg

This has been explainedo n the board before, well at least in regards to the Pilot's Navigation sytem. You might or probably could have success, however it would not be very cost effective at all. By the time you could find the actual system, purchase it, have it installed by either you or a professional, you would be better off getting a dash pop-up system, or a handheld system.

http://www.elementownersclub.com/forums/showthread.php?t=18558