"It's Go Go Time!" appears to be a slogan (like "Get Your Kicks in Dart '66" the following year, and "Join the Dodge Rebellion" in '67). I'm not seeing anything in the brochure suggesting the existence of a "special GoGo edition" Dart. Could you get racing stripes? Yes, you could. A couple different kinds. Show me a piece of factory documentation of the "GoGo edition" or "GoGo package". I have a great deal of '65 Dart factory literature, and I'm not seeing any such a mention.