For 2015, 2016, 2017 Mustang EcoBoosts with Base Brakes and Mustang V6s: this package will only fit 2015, 2016, 2017 Mustang EcoBoosts with Base Front Brakes or 2015, 2016, 2017 Mustang V6s. They will not fit 2015, 2016, 2017 Mustang GTs or 2015, 2016, 2017 Mustang EcoBoosts with Premium Package Brakes.