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For Holley Carburetors; Single Stage; 4.5 Inch Of Mercury Opening Vacuum; With Gasket

For Holley Carburetors; Single Stage; 6.5 Inch Of Mercury Opening Vacuum; With Gasket

For Use With Holley Carburetors; With Teflon Washer

Four Door - Single Stage; 2.5 Inch Of Mercury Opening Vacuum; Single

Four Door - Single Stage; 3.5 Inch Of Mercury Opening Vacuum; Single

Four Door - Single Stage; 4.0 Inch Of Mercury Opening Vacuum; Single