That I think you can do what you want with the FE and the world of knowledge on this forum
This has been as I know you know is a great place to get the info required to get the FE to make the grade. Back when I was pulling I never knew about this Forum.
The FE specialists here are fantastic.
I was really trying to suggest where your combination might need to get too and this would be the place to find out how to accomplish just that.
FE the hell right out of it, It will do it.
Here is a pic of the truck in one of its last pulls about 12 to 15 years ago It was change to F250 for the last 3 years but it never changed the pulling characteristics.