I am surprised why CSF did not take full advantage of the height available. I do know that their heat exchanger is thicker and made with their patented (B-Tube) technology. Wouldn't it possibly perform even better if they have utilized the whole height available, since the OEM is taller in height as seen above in the comparison video.
Just my 2 cent.
Honestly the top half of the cooling package receives less direct flow than the bottom half. I know air swirls passing the bumper. But i have some front air dam diffusers to send more direct airflow to the top half.