A perfect match to GReddy cat-back exhaust systems and/or GReddy Supercharger Kits. All GReddy headers are made from stainless steel mandrel bent pipes. Great care was taken during the design to enhance the performance of your normally-aspirated or Supercharged vehicle, by fine-tuning the placement, size and angle of each collector to even out the exhaust pulses. Combined with large primary runners make GReddy Headers a solid choice for your vehicle.