Yes my intake is a 1973 Super Duty Aluminum intake. It was non production. The number on it is 485640. If you have the pontiac musclecar performance book by Pete McCarthy. It will show the number. It maybe the only one of it's kind. I am not sure. No doubt it was smuggled out the back door of Pontiac after they scrapped the aluminum intake for maybe cost reasons and went with the iron intake.
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