My buddy has a single holley blue pump and 3/8 line dead-headed. Car runs 9.80's, best in the 60's. Been on the car since I've known him. Early 90's. Just some consideration. I run a BG400 in my car #8 return, that's fitting size that comes on the pump, #10 to the reg at the carb. My best was only 9.70's We both have never had any fuel issues. Guess who system/layout cost more. I believe though mine would support a switch to alcohol.