Dual quad question

i ran dual 625 cfm carter competition afbs with minor tuning on my last 440 (though on an old single plane mid-rise intake).i didn't set them up progressive. I took the idle speed screws out ,connected the throttle arms and installed 1 speed screw to control both carbs,and a vacuum gauge for mixture. it worked great on and off the street before I went 505" and EFI.Tune-ability with carters is easy