FWIW, if a hard-line connected small filter at the carb is desired,
This One replaces the 5/16" tubing inverted flare inlet fitting that is common on the Rochester B/BC or replacement carbs. Inlet is 1/2-20 thread (inverted flare), outlet is 1/8-27 NPT. It's a fairly compact filter at just over an inch in diameter and just under 2" in length. Wix PN 33081 is the same as NAPA Gold PN Fil 3081. O'Reilly's and other FLAPS usually carry the Wix part. Just another option...
