Many people have a tendency to concentrate only on the "go-fast" mods and forget all about the "stop-fast" parts on the car. The RX-8, FD RX-7, and several of the FC models have fantastic brake systems for the street. These can still be improved with the addition of SS lines, upgraded rotors and pads.
For the cars that see a lot of track time, the stock brakes are inadequate. They will overheat and the driver will experience "brake fade". This is where the addition of a Big Brake Kit becomes necessary.