COMPATIBILITY – Fits 2004-2005 Chevrolet Impala; 2000-2004 Chevrolet Monte Carlo; 2005-2005 Chevrolet Monte Carlo; 1997-2005 Pontiac Grand Prix; 1997-2003 Pontiac Grand Prix; 2004-2004 Pontiac Grand Prix; 2005-2005 Pontiac Grand Prix GET THE RIGHT PART -- Before purchasing, research to ensure that the part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes IMPROVED FLOW CAPACITY -- Mandrel bends (where applicable) improve flow capacity over traditional bends while increased pipe diameter from OE sizes increases flow and power DESIGNED TO PERFORM -- Fixture checked to ensure a precise fit for quick and easy installation AVAILABLE IN DIFFERENT SIZES -- Offered in a variety of styles and sizes for a quality vehicle repair PREMIUM MATERIALS -- Made from aluminized steel for durability and long life BETTER TOGETHER -- Use premium DynoMax accessories when installing DynoMax mufflers and exhaust systems for a complete performance exhaust system upgrade