I know this has nothing to do with airboats , but I figured you guys could give me some pretty accurate real life numbers , I'm thinking about trading out of my 07 dodge 3500 w/ hemi for a 08 chevy 1500 regular cab with the vortec v6 and was wondering how much better gas mileage I can expect , I'm averaging around 10 to 14 in my dually now and hoping to get up closer to the 18 to 20 range will this truck do that