I would run a edelbrock rpm or a stealth with a 600-650 cfm carb...Is the trans an auto or stick?...I prefer double pumpers on my performance stuff but a vacuum secondary will give you better mileage if its a daily driver.

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1968 mustang..408 windsor.Vic jr heads and intake.Pro Systems 950HP holley, 1 3/4 hooker super comps,Custom CI solid roller camshaft,Probe shaft rockers, 4 speed with 4:11 detroit locker.