Have a 1966 C-Code C-4 and having it rebuilt next week to stock specs.But having a mild hydraulic (dont know specs yet)cam installed ,I also have performer intake and Edelbrock 500 cfm carb.on car now with Hipo exhaust manifolds.My builder said a 600 cfm would have been a better choice vs what I have.This a senior cruiser for me so should I upside my carb over an opinion or is 500cfm ok?Thanks everyone.