There is a front metering block with it and it is stamped 3310-2. You are probably right. I always had the idea that the distribution tabs were there for a specific engine application to help even out the fuel from cylinder to cylinder. Could be wrong though. Eric Jackson probably knows.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now.