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Feed lines to carb are 7/8"-20 which fit many performance Holley and other. Custom Billet Fuel Pressure Regulator 3/8" NPT, made in the USA. Regulators need to be mounted as close as possible to the carburetor to counter the effects of g-force stalling fuel in the lines.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.