Who ever claimed it to be a street head? Abit more than any of use would ever need, the point is heres a new SBF product that is diff than anything else out there. To bad it would take a mini fortune to build (after the block/intake req'd) and over 400ci to take advantage of those heads.
Thought is was cool someone finally cured the issue that all the chevy guys gloat about.
I'm sure others will make heads like this, just like TFS jumped on the CNC wagon after AFR crushed the market with its popularity.