The MagnaFlow 1966-1972 Chevrolet C10 Pickup Performance Exhaust Manifold Down Pipe 15380 is a premium weight-optimized mandrel bent exhaust component designed for superior flow characteristics and engineered to enhance the performance of your 1966-1972 Chevrolet C10 Pickup 4.6L 5.0L 5.3L 5.7L. Each 15380 is produced using precision CNC robotic manufacturing techniques and features 100% durable corrosion resistant stainless steel construction. Professional installation is highly recommended.