The Cosworth Twin Plenum inlet manifold for the Nissan VQ35DE has been designed to enhance midrange and high rpm power. It features increased plenum volume for improved high rpm power while torque enhancing velocity stacks improve mid range power. With performance derived from countless hours of development including computational fluid dynamics, the Cosworth Twin Plenum inlet manifold is perfect for both normally aspirated and forced induction applications. Cast from lightweight aluminium alloy with carbon fibre end caps and includes all required mounting hardware. Will fit with the original strut tower brace. Can be used with the factory fuel rail system or the Cosworth High Volume Fuel Rail Kit.