Ah, above and below rather than all in a line in the original. That was an easier path than intake and exhaust on opposite sides? I wondered why big firms like Edelbrock have never tested the water, or at least used their tecknology to created a mold to fill custom requests.
I think it is due to having the push rods on the other side. No way to get ports past them. Most cross flow heads are overhead cams design, so no push rods.
