For Non turbo 420 Eclipse and Talon. Now you can bolt on a turbo kit to your non turbo motor with this manifold. For 95-99 Eclipse and Talon, manifolds excepts external 35 or 38mm wastegate. Treadstone manifolds are cast using a high ductile silicone based iron adhering to a strict ASTM casting standards. These manifolds are very durable and will withstand all the heat and vibration you can throw at them. Our manifolds casting exceeds OEM specifications and now come with a lifetime warranty against cracking(veiw tech page for additional warranty info). All of our manifolds incorporate external 35 or 38mm wastegate, and either T3 or T4 standard turbine inlet. All internal surfaces are cast smooth for high flow and low surface friction.