I love to discover variations in promos and also have variations pointed out to me. Yesterday I got a new one. A friend and I were discussing paint colors on the 1971 Eldorado and the friend suggested, "I see that the car has the dual exhausts. That is not so common." My mouth dropped open and I responded, "There is one I didn't know. Thanks!" After we finished talking I went and looked at my other 71 Eldo. It had a single exhaust. Made my day.