HONDA CIVIC INTEGRA B16 B18 TURBO MANIFOLDT3 T3T4 Cast Turbo Exhaust Manifold For Honda Integra Civic B16 B18 Series 92 00 DOHC Engines only. Cast T3 T4 Turbo Manifold with 35mm 38mm Wastegate port . No fear of cracking. It's cast iron, so it'll last forever. This turbo manifold will allow for exiting gases to be routed more efficiently out of the exhaust system, giving you better engine response and more power. Professional installation is highly recommended for this product. No instructions