I don't think so. I'm looking at the one sitting on my desk right now - it seems to be contoured so that it really only works with the pocket on the bottom. Plus, it snaps into place, I dunno if it would still snap into place if it were upside down.
another question, does anyone know what this inatlation kit is in this picture? http://www.polkaudio.com/images/systems/35_4_big.jpg
i've never seen it before, it looks like sometihng that is modified from another instalation kit. The difference is that the bottom slot is at least 1/2 din unlike all of the focus kits i've seen, it is also is wider. thanks.