What is the average carb size on a b1 original engine. I am currently running my 1050 pro systems I had built for my old w5 small block a few years ago. I'm just wondering if there's any hp to be gained with a bigger carb.i always run nitrous so I'm not really interested in every ounce of n/a power but if I'm way undercarbed it would be worth the cost to buy a new one