It has been written by several auto enthusiast writers that the ESP *is* different in the SRT (and there are a lot more than just these three):

From "Automobile.com":
The ESP skid-control system has been recalibrated (in the SRT compared to non SRT) to be less intrusive, although there is always an electronic safety net.

From "Car Pages (at UK motoring.com)"
"To handle the extra power, the Crossfire SRT-6 has performance-tuned ride and handling and an upgraded five-speed automatic transmission. The Electronic Stability Program (ESP) has also been tuned for more spirited driving".

From "Auto 123.com"
"The ESP system is toned down a little on the SRT6 to allow for some spirited driving. It doesn't try and correct your every move as you make it, but rather waits a split second to see if you are planning on trying anything risky before applying the brakes and cutting engine power."

I have had both Crossfires, but since I do not drive my vehicles hard, I have no idea if the ESP's really are different or not. It could just be a press release that all the writers are keying off on that *stated* they are different, but sometimes you have to take a corporate press release with a grain of salt.

And if they really are different, I have no idea how you could get the SRT's ESP into a non SRT.

Anyway, the ESP's are reported to be different, and that is the point I am trying to make.