Pictured are the head side of the two manifolds, The underside manifold being the Blacktop, discover the way it has four additional bleed points to the air into a typical chamber. 4AGE 20v ITB vacuum instructions on Intecracing.com can not help with all the remainder of the pipeing as it https://raymondxnhkz.pointblog.net/4age-engine-for-sale-an-overview-78916751