The MagnaFlow 1967-1970 Ford Mustang Street Series Crossmember-Back Performance Exhaust System 15816 brings enhanced engine sound and dyno-proven performance to your 3.3L, 4.1L, 4.7L, 5.0L, 5.8L, 6.4L, 7.0L 1967-1970 Ford Mustang with a healthy helping...