so much for the good ol days when the air cleaner sat right on top of the engine and carb... it wasn't even and issue back then.....
I would try lining the intake with a sheet of rubber or some spray on liquid electrical tape , closed cell foam or something like that and see if it helps eliminate the drone. Something to dampen/absorb the vibration
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DJ Phoenix (my modded) Hi-1200/240Tow/75FS/80DD/100/140SS +Minotaur
ASE Master Auto Technician 
2001 Ford Excursion 7.3 4x4
Projects. 1970's Hustler and Max II Amphibious ATV's
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