Norton Internet Security Dual Protection - Upgradable?

Really what I need for my Mac (OS X 10.8.2 (Mountain Lion) ) is the old Norton Internet Security Dual Protection, I am planning on running Fusion+Windows-8, but I'm aware the product is old and no longer marketed by Symantec, and out of the box doesn't support Mountain Lion.  Nevertheless, I see that it's still for sale (old version) at various places, so here are my questions:

 

  1. If I bought the old version, registered it, could I then upgrade to NIS for Mac 5.x or 6 (whatever is current) without cost?
  2. Same question on the NIS for Windows, could that be upgrade to NIS 2013 or whatever variant eventually supports Win8?