quickest et,s on an edelbrock carby

my car ran 12.2 with the 750 cfm EDE carb, #1407. It´s a 68´Valiant 2dr, 408ci sb. I´m pretty sure it could pick up a little with the 800 cfm carb (AVS or AFB). Meantime i replaced it with a 750 Aluminium HP Double Pumper from Holley, best ET so far 11.9, still tuning. This was with some other mods, too (converter), i don´t think the Holley picked up that much. If i can get my hands on one of these 800 cfm Eddys i´ll give it a try, they are ok in my opinion.

Michael