1979 original airfilter size

I just looked up an original 1979 AC Delco replacement and this is what they had listed for the dimensions:

Inside Diameter Top: 12" (304.8mm)
Bottom Inside Diameter: 12" (304.8mm)
Bottom Outside Diameter: 9.9" (251.5mm)
Outside Diameter Top: 9.9" (251.5mm)
Shape: Round
Height: 3.5 in (88.9mm)
Alternate/OEM Part Number(s): 06484235, 6484235, 88915347, A348CF

I hope that helps.
 
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