Congratulations on your efforts with this project!
Love the individual runner stack intake system! Perhaps this manifold is of a plenum design vs. I.R.? What are the throttle bore diameters?
For one who may be looking for the "9's", or just to utilize the greatest potential possible from the engine, if of an I.R. design, note that stack length will/is compromised from the potential "ideal" for appearance & packaging (hood clearance), and that the small individual air cleaners will interfere with top-end performance.
Also, at this level of build, did your engine builder discuss oil pan options/concerns? The unit as seen in the photos appears O.E.M. production, or at least of the same approximate holding capacity?