[ecomodded]

Wow you have a long commute.
Read over the 100+ hpermiling tricks and find some that you feel comfortable with, exploit them for all your worth & every chance you get.
You can squeeze 24 mpg out of your truck by changing your driving practices and keeping your tires inflated to some serious pressure not 35lbs.
45-50lbs or more if your tires are rated for it.

You have to commit to driving very very efficiently.
It may seem like trying to squeeze water from a stone with your truck but what you would mostly be modifying is your driving habits.