I'm trying to understand if a 70 Dodge Coronet R/T should have Prestolite or Spartan horns. I'm told the Mopar should have Prestolite horns, but apparently there are Spartans on the vehicle. It's a one owner car. However, given the time frame, the horns could have been replaced and just no recollection. I just wanted to see what others have on their 70 B-Bodies (less Road Runner horns).