In the archives of American automotive history, the concept of a factory-built “muscle wagon” sounds like a modern invention, perhaps a recent performance variant from the likes of Dodge or Cadillac.
Did Dennis Kreklow give his '75 Comet the name he did because of the home-built puffer on it, or because his Merc is a member of the sign of the cat (remember your first reader?)? Whatever the origin, ...