The 2005 Mustang GT comes standard with aluminum twin 43mm piston PBR calipers with 12.4" vented rotors up front and iron single 43mm piston calipers with 11.8 vented rotors in the rear. The 2005 Mustang V6 uses the same calipers as the GT, but with 11.5" vented front rotors and 11.8 vented...