The MagnaFlow 1961-1964 Chevrolet Impala Street Series Crossmember-Back Performance Exhaust System 16724 brings enhanced engine sound and dyno-proven performance to your 3.8L, 4.6L, 5.3L, 5.4L, 5.7L, 6.7L, 7.0L 1961-1964 Chevrolet Impala with a healthy...