There should be a few small vacuum ports on the front of the carb near the idle mixture screws. Check for a line that has vacuum above idle speed, that is your vacuum advance port.
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72 Chevy C20, SOLD (Dang it.)
09 Challanger RT six speed in all black.
74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power.
73 C10 long bed, 350/350 combo, nice shape.
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