T70 T3 Twinscroll Manifold Flange Stage III Anti-Surge Turbocharger Turbine A/R .84 High Quality Material, Cast Housing with Durable Steel; Boost Engine Horsepower Significantly Increase Engine Power and Torque Outpout; Maintain Combustion Chamber Pressure and Fuel/Air Load Contructed with High Quality Material; Built for Durability and Strength Capable of Boosting Horsepower up to 500+ BHP / Exhaust (Turbo Manifold) Flange: Standard T3 4-Bolt Twinscroll / Exhaust (Downpipe) Flange: 3.25" V-Band Inlet/Outlet: 4"/2.5" / Compressor Inducer: 56.2mm / Turbine Exducer: 58.3mm / Turbine A/R: .84