Unusual Air Cleaner

My 1967 Barracuda has an unsilenced air cleaner on a 2 barrel 273
This is the original factory air cleaner, my grandfather purchased the car new and he didn't change it. This is an early 67 California car
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It uses the same filter as the chrome Commando air cleaner.
The base is designed to fit the Carter BBD carburetor.
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Here is a California 1967 Valiant with a 273
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I've looked through the parts book and couldn't figure it out.
The 14-29-2 Part type code looks to be for the snorkel unit.
The 14-29-7 shows 2463932 this looks to be the cover.
The 14-29-9 shows 2402678 is this the 2bbl base?

I have never seen one elsewhere, why did one end up on mine?


Thanks,


Alan