hey all i'm Floyd,male 54years old an have a 74 pontiac ventura with a 350 chev engine. It's automatic with a shift kit an 3.55 rear gears. I'm think about upgrading the fuel delivery system,with a edelbrock performer RPM spreadbore an a Q-jet stage II carb. with a edelbrock fuel pump. Oh i was wanting to know if i should get the victor series with 13-14 psi or the one with 6 psi?