Re: Possible COPO?
The ZL2 hood and related air cleaner items was an RPO performance option (standard on Z11's) that was included as part of the 9561/9560 COPO package. The L72 motor required no more hood clearance than an L78 equipped Camaro with an SS hood using the standard open element air cleaner. A true flat hood (I'm pretty sure, recalling the olden days) would also work on either of these installed motors using the open element air cleaner.
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