The window louvers came on the GT's. They also had hideaway headlights, which just made that body to me. One of my best buds in high school had one. It was the first cam, intake and carb swap I ever did. The car had a 302, two barrel. We put in a cam, swapped intake and carb. The car slowed down, got worse gas mileage and never ran right after that, but looked much better...lol
Ok, then we put on THRUSH mufflers...thats another story for another time.