gsjohnny

i race a 350 buick. since nobody makes hi-perf intakes, so i make my own. i have made a single plane and a s/charger intake so far. i looking to build a fi unit. i will use a sbc unit for this project.
but the question is, with all the different barrel sizes, how do i know which one to use? and how do i figure nozzle sizes?

thanks
john