This Offenhauser 360° Tunnel Ram 2/4 Intake Manifold is a high-quality replacement part for your Ford engine. It is designed to fit perfectly and provide optimal performance for your vehicle. The manifold is compatible with 429/460 Ford engines and comes with index plates for choice of carb location. Manifold has been bolted down one time and has no damaged or inserted threaded holes. Manifold is completely stock has not been molested in any way