I used to have a 68 f100 camper special had the big block 360 in it with the bulldog 4 speed and the posi-rearend it was red and white 2 tone original paint
gas mileage
I dont think you are doing bad i have changed the way i drive and today i was rewarded to the tune of 28.9MPG:D. I keep track of all of it on fuelly.com. If you want to look at it the trucks name is black out.