Yes, that can and has been done. In fact I'm oing to eventually do the opposite and move mine up. Here is a link with some info:
http://www.986forum.com/forums/showthread.php?t=9262&highlight=controls
There are other threads here as well, just do a search for climate controls. Here is pic from a member who recntly did a double din install:
http://www.986forum.com/forums/attachment.php?attachmentid=6645&stc=1