"High Performance Red" I believe is an alias name for "TorRed". The only two reds available on recent Chrysler vehicles (Charger, Magnum, and now Challenger, etc.) have been:
Inferno Red Crystal Pearl
TorRed
I've heard "TorRed" referred to in the same breath as "High Performance Red" many times. For instance, check out this RedLetterDodge article:
Red Letter Dodge » Talk Back: Challenger Exterior Colors – The Perfect Canvas for Personalization
A snippet from it:
Originally Posted by RedLetterDodge.com
At the top of the list, for diehard muscles aficionados were Heritage colors like High Performance Red (TorRed), Hemi Orange Pearl and B5 Blue Pearl; not exactly like those of 1970, but new interpretations reformulated in the lasted high tech pigments.
So in terms of how Chrysler views it, High Performance Red = TorRed and vice versa.