The MagnaFlow Performance Exhaust Manifold Down Pipe 16434 16434 is a premium, weight-optimized mandrel bent exhaust component designed for superior flow characteristics and engineered to enhance the performance of your 1967-1973 Chevrolet 5.0L, 5.3L, 5.7L. Each 16434 is produced using precision CNC robotic manufacturing techniques and features 100% durable, corrosion resistant stainless steel construction. Professional installation is highly recommended.