The '68's have those side marker lights as mandated by law, '67's didnt have them.
I own a '68 but the '67's in my opinion have a cleaner look ..
It's a little pet peeve of mine that those lights are too big in proportion to the car, not that I love the way the '68 looks too but check out other '68 pony cars' like a camaro or firebird, the marker lights are tiny, look cool..
Oh well, theres no such thing as ta perfect car ..excuse me for venting

..