Speculating, the GT500 may cost approximately $15-20k out the door over what a new Mustang GT costs. Throw some of that savings into a SC and other mods and you still get quite a nice new performing car. Yes the GT500 will be the king of the hill but not everyone can turn over a new car plus mods everytime the king of the hill is replaced. That's why I still have a 99 Cobra verses newer, so I can have my other two vehicles also and not drive the Cobra daily.

The GT 500's price is not known at this point so let's say $40K with a markup of $5K. For that price you get a monster out of the box and with the normal bolt-on's you we be seeing over 500 rwhp before a pulley swap more than likely.
Comes down to the almighty $ again and how much power is enough. ( is it really ever enough
)