Ron... Hey... Yes it had a TEP port and polish, with their turbo cam (it's a turbo motor) 3 inch mandrel exhaust and a "significantly worked" exhaust manifold.
The HP numbers were derived using data logs and showed some interesting results in many areas of the power band where the only addition was to add the new intake manifold... nothing else new was added... The same fuel and timing maps were used and they showed that there were significant "lean spots" with the addition of the new intake, thus requiring adjusting the maps to compensate for the increased "breathing"... Breathing = Lean "ranges" in the pwer band = more fuel required, meaning it made more power...
I am excited about assembling Justins manifold with the velocity stacks and "tuned" plenum because I believe it is a superior design to what was being tested.... Also, I now have the motor that all this testing was done on so I will be able to compare the thagard manifold to this newer design and give you some interesting feedback. When the testing was complete it was making 366 rwhp
Hope my explanation was clear... it's late and I'm deliriously tired...
Ken