I will.... I drive like a granny most of the time.
Not sure it will help ya much..... Being that my expo jeep is half crawler too. It has coilovers/ triples, corp14, kingpin 60, 40s, etc and it often tows my expo trailer. But I will let you know mpg either way.
Another buddy has basically the same setup with the supercharger and he gets 15-16 in town and 18-18.5 on the hwy. Which is good in my opinion being it weighs more than 6k lbs.
Thanks