Borla 2011-2012 Ford Mustang GT 5.0L 8cyl 6spd RWD Agressive ATAK Exhaust (rear section only)Borla has developed a revolutionary new exhaust technology that enables our engineers to deliver unprecedented vehicle specific control over the acoustical note of an exhaust throughout the RPM range, while retaining 100% of the power adding capabilities of Borla? s patented multicore design. Called ATAK(Acoustically Tuned Applied Kinetics), this new technology produces the highest available dB (decibel) levels in the Borla street legal lineup, and is