Looking for info on a Holley List 6979-1 date code 0551. Looks like Chevy linkage.

It's a 4160 600 cfm don't know what it was used on.

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Mark D
1970 Z28 M22 4:10 (soon M22 wide ratio), 1987 Grand National.
http://http://ca.geocities.com/mlvd@rogers.com/ (http://ca.geocities.com/mlvd@rogers.com/)
WTB: 70 SS396 Chevelle 4-spd, flapper hood car, no rag tops, 1-2 owner car.

Thanks for the info. It looks like a Holley replacement carb and not a OEM since there are no part numbers. Can anyone verify this?
I have emailed the Holley tech line several time with no response.