Many dual-quad Hi-riser engines DID come from the factory with some version of a 'cold air' box over the carbs, but I don't recall ever seeing a 427 DQ engine come from the factory that didn't have the 'air cleaner' shown.
KS
To my knowledge Ford didn't make a standard style air cleaner with the wider high riser carb spacing. All that were factory installed in Thunerbolts or LWG had a ram air "bonnet", or the circle track cars had a batwing cowl induction air cleaner.
All of this doesn't matter, as that is quite the mixture of parts anyways. Side oiler service block, HR heads, SOHC/TP carbs, and a mix of other components. Not really "correct" for anything. Looks more like a mix of parts that Mike had laying around the shop.