1965 barracuda wide body build

What is your idea of a wide body? Do you want to widen the body or just make mods like air dams ect.?
Considering it is for his 13 year old, I would assume that they are meant to be more for the visual effect similar to how JDM, and more modern cars have their wide body's to fit wider wheels. It's unconventional but I love creativity so I can't wait to see how it turns out