When I owned a big block gasser, I tried using a wing mounted on the top of the cab. Good thing it was a try it before you buy it kind of transaction ... it kept the bugs off most of the front of the fiver ... it made no noticeable difference in fuel mileage. Pickup wings are not in the same league with tractor trailer cab cowls. Too much air can go around and under the pickup wings to enable them to work as desired. You be stylin pulling into a campground though.
