Nice find. In Michigan if you have a car over 25 years old you can get a "Authentic" licence plate with a one time fee of $35 that never needs to be renewed. I have one on my GT-37 . If I went with a "Historic" plate it would have to be renewed every 10 years and cost the same $35 each time.
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1971 Pontiac GT-37
Car is a junk yard dog and maybe one day will be restored.