I honestly think (I'm being biased too) that the best Saleen treatments were on the early 05-09 S197s.
Maybe up to the 2010. Everything else, Ford themselves did a very good job of modernizing and improving the look that anything you do just became too much design and detail and made it look too aftermarket.
Screw Saleen. I can't buy anything from them again. I have their blower and they pretty much wrote it off. After their financial meltdown and Steve Saleen losing and regaining his company they now suck. No extra parts for the blower. Last time I called tech support no-one answerd. I left a message on an answering machine and got a call back a day or two later to tell me they don't have any extra parts, they are thinking of making more but are not sure. I have a Supershaker and if something happened to a couple key parts there is no replacment.