Just as suspected,I see little or no difference in the way the truck pulls. Jeff said "I told ya so,it's the torque-the torque is still 1850 foot pounds,there ain't gonna be any difference".But still,75HP is quite a step,you'd think it would pull a little better anyway. I think maybe the guy that did it has computer skills like me-when he got done instead of clicking "save" he clicked "delete" by accident.