Oh, so you assumed when you made your bold proclamations. Do you always make assumptions when building all those engines you do? Interesting.
Those 210 cc heads would be terrible and I would bet that if you called Dart, Brodix, AFR, and Edelbrock they would say the same thing.
Also would be interested in what you consider expensive since the Bowtie Vortecs since you can pick up a pair of complete heads for a grand.