Stainless Steel Header Manifold for Toyota FJ Cruiser (2007-2009) 4.0L EngineWaking up the 1GR FE isn't about chasing dyno sheetsit's about fixing that restrictive, heat soaked factory manifold and getting the throttle response your FJ Cruiser deserves on the trail. Performance Stainless Steel Header Manifold Kit for Toyota FJ Cruiser (1GR FE) If you have spent any time under the hood of a 2007 2009 FJ, you know the factory exhaust manifolds are a major bottleneck. Designed for mass production rather than flow, the stock units