Jesus man, the difference between a stage 3 port and the Cobra head's port is extreme!
Here is the Cobra 1000cc intake throat
And here is the Rattlesnake 890cc intake throat.
These photos are really poor and the difference is still so obvious. I wish you guys could stop by and put your eyeballs on it, it's like night and day. I need to avoid elevators for 11 days so I don't get any sexual harassment suits.
Here is the Cobra crank next to the Rattlesnake crank. Of course the Goldenrods are gone. They're somewhere in Germany hopefully being put to good use. Much more machining and at a much greater depth on the Rattlesnake's crank. No fluting, but the benefits of a flute on the mains is arguable.