Sounds like you have the ones i was just asking about... any chance you could post a pic of them? Got any spares?
Wonder why some had red and some were black? might also be an early/late thing. I once believed the only thing that originally used the red 427 ones i posted above were non-SS cars, but from what Buizilla says, SS cars could have them too, unless he's talking about the SS427 ones with the red background on the lower portion. Interesting topic. Rick Nelson... any ideas?