Radiators: Is 22" enough for 400 HP?

Airflow is one thing, but I tend to think increased suface area to dissapate heat along with the added coolant capacity still ads up to a positive effect. Maybe not 100% optimum, but still better than the stock 22" 2 core.

Maybe I should cut out an inch around my core support, and while I'm at it switch to a standard grill with less restrictive fins, or just remove the grill entirely. Maybe I'm not an engineer, but I think we are splitting hairs here.