Thank you. I have a few intakes to pick from and been going down the rabbit hole of how top builders are formulating the lengths to maximize what is available. May as well be informed and see what can be accomplished.
I see a rough starting point is 13" total runner length from plenum to valve for an engine running 6000rpm. -1.7" for every 1000rpm increase or +1.7" for every 1000rpm reduction. Just things to keep my mind busy during work.