Plow wings are great things. I have two of them, however to be effective ya need a truck in the 30K plus gvw range. Anything less and the wing is either too small to do any good, or when ya try to move any amount of snow, the plow decides where the truck is going.
I used to have a 90 F 350 dump body, with a wing, the wing was about 16" tall. It wasn't good for much, and the truck didn't weigh enough to push old bankings back, like a big truck can.