I am in favor with Gearbanger, so lets make this official, it is called a deck spoiler, not a wing.
My car is nowhere finished. I will probally get a deck spoiler such as the one from Rick 91GT. I just can't get used to the look of a fox without something in the rear, without it the car just dives down and screams "ground zero of the smog erra". It's not even mullet, it's pre-mullet. Probally the guy who invented the mullet was looking at the back of a mustang without a spoiler and got a horrid idea "bizz in the front, party in the back!!!"