I think your set up 350 T5 3.54 rear Light street rod . You could go with a 700 CFM Holley D/P . If you wanted to run the car at the track alot . But for a good street Holley carb I would run the 670 CFM V/S Avenger . But my first carburetor pick would be . The Edelbrock Thunder series AVS 650 CFM adj V/S carb . I have always had good Luck with the Carter AFB-AVS Remake carburetors . I do think what ever Brand you go with the V/S under 750 CFM is the way to go .