S400SX3-67.7, S467 FMW (Forged Milled Wheel), with a Twin Scroll Turbine Housing

Rated at 500 to 950+HP straight from BW.  But on a diesel application, we would rate this 750-800 max at the tires.  The higher hp capability is with a T-4 1.10 A/R exhaust housing. 

• Compressor: FMW 67.7 mm inducer, 91mm exducer, with exclusive Extended Tip Technology.
• Turbine: 83.5 inducer, 74mm exducer. Cast in Inconel 713 for high-temperature operation.

Housings:

• Compressor: 5" inlet with a standard VBand outlet
• Standard Size Turbine: T4 1.10 A/R, with 'divided' volute, featuring 'T4-style' turbine inlet flange (3.25"x2.75"), and quick-release v-band discharge flange. Cast in ductile iron.
• Standard Exhaust Housing: T4 1.10 
  
• Optional Exhaust Housings: T4 .90 or T4 1.00