Here is an article out of Mopar Muscle Magazine.
The '67 440 HP engines used one of two air cleaners-the first being a dual-snorkel unit with the snorkel more oval shaped the closer it came to the air cleaner. The second type was a large 18-inch round unsilenced air cleaner, similar to the dual-snorkel version, but without the snorkels. It's similar to the '64-'65 426 cleaner except this and the '68 cleaner are not chrome. The '64-'65 air cleaner doesn't accept a pie tin I.D. plate. The unsilenced unit was also used on '67 383 A-Body applications and some early '68 383 HP and 440 HP engines.
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http://www.moparmusclemagazine.com/techa...l#ixzz1blIykk4FThis is exactly what mine looks like, but mine is chrome. I was thinking I should strip it back down and go with the black wrinkle finish.