Can someone please school me on 340 air cleaner

Thanks for all the info guys. Imma collect my thoughts on whether to go 71-72 340, or cheap out and go 68-69 bbody unsilenced. But for now, this is what i have and its not terrible just looks too direct connection/magnum era..

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I will trade you the air cleaner off my Duster for your air cleaner, message me if you are interested.
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