2015+ style 6.7 Powerstroke Billet Wheel. You should notice very little difference in the bottom end power but should gain up to 30 horse power on the top end.
Power Stroke 6.7L
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.