The standard brake package on Mustang GT is equivalent to the system used for the 2014 Mustang GT track package. The new GT performance package includes the same brake package found on the 662-horsepower 2014 Shelby GT500.
Its a 4 piston caliper that is very similar in design to the outgoing Brembo calipers, but does not seem to be officially branded Brembo, as its probably made by one of the other caliper suppliers for Ford (PBR probably.)
Would be interesting to see one compared to the 11-14 brembo calipers
The PP on the GT is probably much more about revised suspension and radiator, etc, than brakes. I can't imagine more than 3 people who frequent this forum thinking the regular GT brakes weren't enough.
Question is, aftermarket suspension goodies or just buy the PP and be happy? Unlike the old track pack, this performance pack may not be the great deal it once was when compared with the aftermarket.