There is an old saying that "There's no simple solution to a complex problem".
You can't just throw huge calipers on a car and expect it to become a "Sultan of Stop".
Look at the specifications and numbers the Crossfire SRT lays down and you'll notice they are very comperable to that of the finest of exotics. Unless driving HARD and I mean hard the brakes are very good and with minimal, affordable upgrades the brakes and overall the car can be brought up a full level quite easily.