The Dart Sport in the above pic appears to be the same as the near lane car in the original photo based on the lettering above the front wheel opening being offset towards the front of the wheel centerline. It has "Pro 246" so that would appear to indicate that this photo was taken when he lived in NC (Division 2) while the original thread photo was taken when he raced out of Division 3/Michigan - "Pro 302".

I read an article about when he lived where and then moved. But I forgot the details. Perhaps the time line might eventually help with identifying both "twin" cars.