GREDDY STAINLESS TURBO EX MANIFOLD FOR SUBARU IMPREZA GDB GGB 10561002Brand GREDDY Product Number 10561002 Compatible Car SUBARU IMPREZA GDB GGB Product Description Compatible Engine:. EJ20 A stainless steel exhaust manifold that adopts a layout that is nearly equal length as far as the space of the engine room allows, and leads the exhaust gas to the turbocharger efficiently The main pipe diameter and the waist gate line diameter are designed to efficiently work the conforming turbine fit turbine: the joint pipe before