This Stop Tech Big Brake kit is a great upgrade for your 2014 Mustang GT. It works with base model brakes and the factory Brembo upgrade that came on the GT models. This Mustang brake kit will be a huge improvement for your base model because of its 6 piston brake calipers. The only thing you need to keep in mind is to ensure you wheels have the clearance for these larger brake components. Use the template on this page to help check clearance of your wheels.