Chuck, the air filter element lists as Fram #CA340A, Motorcraft #FA-74.
I believe the air filter assembly of the '73 -'74 cars is vertically less high than the assembly of the earlier cars, to make up for the extra height of the egr plate beneath the carburetor.
'72 and earlier cars list Fram #CA324A, Motorcraft #FA-50 for an air filter element.
The lid of your air filter is probably blue because the chrome had rusted, and a previous owner (or Mayberry) painted it blue to improve the looks. The chrome lid on my air filter is pretty rusty.
cowboy from hell
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