I need the help of you gurus as I'm still learning. My wagon has a chevy 350 with performer intake I believe a performer cam full dual exhaust 3.73's out back. The carb is a performer 1405 600cfm that I feel is already undersized and I bought a rpm air gap this weekend and really don't think the carb is going to cut it. This is where I need the help what do you all think is it too small of a carb? I was thinking a 750 cfm with mechanical secondaries what are your thoughts.