This a great misunderstanding of carb sizes.
Basically no matter what carb you run on your engine it's gonna be the same cfm in your case about 911 cfm just at a different vacuum level. You could put on 2 950 and your engine ain't gonna all a sudden use twice the air and fuel. (Wash down the cylinders) It's still gonna use 911 cfm just a lot less restrictive. Not saying it will or will not work. Just making a point more carb don't equal more fuel or even air it will just operate at a lower vacuum level (restriction)
Carbs should have 3 ratings street, street strip and full race. Say at vacuum ratings of 1.5"/1"/0.5" or something like that.
