I manufactured a custom oil cooler airflow shroud out of fiberglass by carving a foam block to match the mounting locations of the oil cooler brackets. I added some aluminum angle to the shroud and to the firewall to support the attachment to the firewall and the inlet air hose.
The shroud is held on by AN3 bolts to nutplates on the firewall brackets. It's all painted red to match the engine pushrod covers. It's mounted in an optimal location for the 3" air hose to clear the engine mount and for the butterfly valve control bracket.
