1. PaceSetter Manifold Catalytic Converters are custom-engineered to deliver maximum performance and efficiency from your engine with durability and ease of installation. 2. PaceSetter Manifold Catalytic Converters are a direct replacement for original equipment 3. Manufactured using mandrel-bent stainless steel tubing for a low restriction tubular manifold design Stainless Steel construction 4. PaceSetter Manifold Catalytic Converters are designed with easy bolt-on installation in mind. (Some vehicles may require welding or fabrication.)