I think folks are mixing parts. the following applies:
2013-14 trackpack is the StopTech rotors (exactly what the Gen4 ACR's had) and the same brembo rotors all the way back to the 2003 Gen3
2013 SRT and GTS models had the option for trackpack (brakes and wheels/tires)
2014 SRT no longer has the track pack option, only avail on GTS
2014 GTS come standard with track pack brake package. lightweight wheels/tires are an option and I believe for SRT model as well
The LE is unique for 2013 models in that it is a GTS with the track pack brakes, but not the lightweight wheels/track tires.
The only car with the special brembo rotors for 2014 is the TA. I wish this was the trackpack option, but it is not.
To emphasize though, the calipers are identical to what has been on Vipers for 10yrs for each model.
