I see the Bullitt as a collectors edition Mustang. If I had one, it'd be ALL stock...with the exception of a K&N drop-in. I wouldn't drive it much, either. Those are badass cars. JUST MY OPINION!
lol by the time a modern day mustang will be a "collectors" car, internal combustion engines will be outlawed. its just a mustang, collector car mustangs were done right around 1973. i highly doubt fox bodies will be shown on barrett/jackson 20 years down the line, let alone a new edge bullitt.