It seems to me that a too big of port thing is not as important as it seems at first glance, a stone stock 392 CID GEN III hemi runs great at 2000 RPM with huge ports, next time you drive one with a 6spd try lugging it at low RPM, seems to run just fine, as a matter of fact the eagle 5.7 has almost as big of ports with even less displacement and make plenty of TQ down low and has great throttle response once the DBW crap is tuned right.

Wet flow dynamics is more than just high velocity. These modern engines work so well because the engineers work on improving all aspects like flow, swirl, velocity, cam timing, runner length, ex flow, chamber shape, spark plug placement (find a way to get the plug in the richest mixture part of the chamber), cool intake air (hint... the manifold is a lot more important in keeping the charge cool before entering the chamber than the part the air filter is hiding in).

Bottom line is you can still make big TQ with big efficent ports but you can not make big HP with little ports no matter how "efficent" they are. I got a set of modern cylinder head CNC 302 casting heads and velocity is incredible but even jeff said he had a hard time making 500 hp with em but TQ was great. You just got to find a balance that works for you.