Regardless if you 'track' the car or just cruise, brakes are far more important than how fast a car will go. No brakes and you're dead or worse yet, someone else is dead. When I retired from Law Enforcement, I went to work as a consultant for Performance Friction Brakes. They make a fabulous brake pad and interestingly enough, many race teams use their pads and rotors. If you can find them locally, they make a great addition to your car. Here's their web site:
Performance Friction - Brake Pads, Rotors and Calipers for Racing, Street and Fleet Applications