I'm wondering if anyone noticed what I noticed.
First, they said they used a 1.6 roller rocker. It was one of the changes they made to the original motor. And what happened? They had valvetrain instability, in their words "valve float". They also pre-qualified any lack of rpm by basically blaming the hydraulic lifters.
Then, when they showed the ported heads, what do I see but beehive springs and retainers. I guarantee the ootb rpms didn't have that. A much lighter spring and retainer package, and the ability of the ovate wire to resist harmonics, is going to help rpm, even if the geometry is not right. A closer inspection might show that the 2.08" valves they installed are a smaller stem size to knock off even more weight, and possibly help the numbers a tad. It didn't have any noticeable valve float during the second pull, so thems apples of a different color.
I rate this test B+ S!
