You may be correct, but here's the camera I purchased.
http://cgi.ebay.com/ws/eBayISAPI.dll...m=120506758231
I mounted it in the same location as you did with AK's 370z. When I mount it that way the camera points downward at about a 30 degree angle. If I turn it over not only will the camera then point up at a 30 degree angle, but I will need to lower the mount so it clears the rear bumper. It's hard for me to beleive they intended this camera to only be mounted on "top" of a flat surface or that the HU can't be adjusted to flip the image.