Ball Bearing Turbos (3.0L - 4.0L) 400 - 600 H/P // Oil & Water cooled bearign system / High Performance BCI-18 Compressor and UHP Turbine / Perfect for high-horsepower, but responsive engines / Works well as twins for large V-8 engines / T3 turbine inlet flange and 4-bolt turbine outlet flange / Turbine housing is cast from high-nickel "Ni-Resist" material for extreme applications / Turbine housing option available.