The dual exhausts may help and as you point out the A/C removal will also. I have this confident feeling that I can get some increase using these measures. From 10 up to 14 mpg would be a 40% increase. It's the difference between a 600 mile range and an 840 mile range on my 60 gallon tanks.
Goodness, I'll be able to go all the way to Loreto in the Baja on one fillup :) I find that the vehicle runs most smoothly at about 60mph which will keep me from being a traffic hazard.
Bob
1966 Ford F-250 "Camper Special"
Mira Mar Mobile Community
Oceanside, California
