Stromberg Carburetors NA-S3A1 Cores
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The Pepsi can is shown for scale. These carbs are SMALL and don't weigh too much. 1203 grams, or a little over 2.5 lbs.
Very low parts count
Safety wire inside the float bowl and inside the venturi.
The ironic part is that once the wire was cut, I still could not unscrew the needle seat. It's seriously in there.