Here is the result of my adding 67 side fender louvers to my 76
Other mods include 2000 LS1 engine, 78 Pacecar spoiler, 80 side mirrors, 80 t/t steering column, 80 seats, rear monoleaf spring. heavier front springs and swaybar, rack and pinion steering, and I am waiting on my 18" wheels and tires.