Very helpful post. Was fairly certain my FUSC was not transferrable and now I know it isn't: SC05. Thanks for the post.
To be honest, I've wanted to trade my S for an X of similar year but giving up FUSC is harder than I thought, despite that I don't use it as often as others. I definitely use it and a recent road trip to So. Cal felt "good" with gas at $6.00/gallon, but I honestly don't know how much it costs to supercharge as I've never paid for it. Funny because people ask me all the time how much supercharging costs and I have no clue.