Differences between 273 Commando Silenced Air Cleaners?

66fs said
Some 66 2 barrel 273's had the unsilenced air cleaner with the 2 barrel base plate. I had one. It was black.

Correct on that.. in my 65 parts book is... (so it was not only 66)

14-29-2
Unsilenced w/2 Barrel Carburetor, w/273 cu. in. Eng., Barracuda.... 2465 310

14-29-6 FILTER
w/2 or 4 Barrel Carburetor, w/Unsilenced Air Cleaner except 426 cu. in. Eng. .... 1946 923

(and since Chrome is not mentioned, default would be BLACK...
And the filter shows P/N 2465 310 was the same size as the 4 BBL cover)

:coffee2: