MagnaFlow C/B 59-64 Bel Air/Biscayne/ImpalaThe MagnaFlow Chevrolet Impala Street Series 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 helping of our deep, resonant signature exhaust note at Moderate exterior and Mild interior sound levels. Thanks to its durable, corrosion resistant stainless steel design, this Chevrolet Impala exhaust system will handle whatever tarmac you decide