Muscle car definitions?

Ok i know my "Spare change" dont really count considering i'm a newb to the forums an all, but personally the Muscle car definition is completely screwd up. Any thing with more than 350 HP an 4 wheels should be considerd a "hot rod" i mean honestly, i dont see any "muscle truck's or Suv's" it's just wrong, the muscle car end is so closed off to any other type of bodystyle that it's honestly just sad..