Running without a thermostat ok?
Great point. Airflow is important through the front end and radiator.
Last year's Shelby mustangs did not have a grille because they needed the airflow. They realize that the warranty on the condenser will go up because of it, but it's cheaper than warranty'ing overheated engines and redesign the front end for more airflow.
The Grand Cherokee went from 8 openings in the grille to 7 larger ones somewhere between 93 - 95 as they gained 10% more airflow which they needed to reduce head pressure for the condenser as they were running close to the max under extreme conditions...
