My point is this...there is nothing from the tag codes listed in the original post that disqualfies this car from being what is described. I have one small question on the codes but what is listed is consistent with what one would expect to find on a car as described. Does that mean the car in question is actually a 70 Dart 383 four speed prototype? I don't know but there is nothing from the tag data that proves it isn't. I for one would love to see a picture of the tag.
Someone with moderate knowledge of tag layout could make up a fake car/tag. It wouldn't be that hard to do. Does the original poster have that ability?
Sorry, Crackedback, I had to tweak the format a little to show the Windsor plant layout. The three Xs after the color indicate a space on the tag.