Bigger is not always better! Whether you want to get rid of your problem plagued VGT or VNT turbo, on your 6.7 Cummins or Duramax, or you?re just after that classic "diesel sound" the S463 is a great place to start for any sub 700 RWHP application. With a smaller compressor and turbine package, matched with the .90 turbine housing, our S463 offers great spool up and driving characteristics, without sacrificing reliability. The robust S400 chassis has all the big features it needs for long term reliable power delivery.