Z32's do not have ANY way to relieve excess heat from the engine bay, other than out the bottom of the car...and even then, the majority of the bottom is covered by closeouts.
Z32's NEED good topside ventilation. I will be removing the seal at the back of the hood to see if that helps. Still don't know why they sealed it off. It's either heat or water protection. Heat could cause windshield cracks or melted plastic grills. Water could cause electrical corrosion.