I am suggesting a core without the red area and better designed end tanks,inlet-outlet(diffuser,Nozzle)will work better than the whole thing as it is now with equally if not lower AIT's and less pressure drop.
Keep in mind, that the merit of a core is its efficiency versus its internal drag...
It will conduct heat from the top but no where near as fast as the turbo is putting it in,so will still be hot.
Why would you want to deflect hot air to the top of this core if it is relying on conduction/convection to cool?
If you do fit yours with the 60mm alloy pipes imo the AH one will be better than the Forge.I still think it would be even better if it was a little shorter as there isnt alot of airflow if any going through the top part of your core.