looks like the race cars used a flat piece of aluminum to seal the single 4bbl to the hood
I have 2 air cleaners - 1-drain & 2-drains, otherwise identical scope

moparts Posey 77 Marlboro TA 6-70 N94.jpgmoparts Dodge  Marlboro TA 6-70.jpgmoparts N94 TA hood single 4bbl BASES.jpg