In what type of corner? The fast sweeper at Lime Rock, or something like turn 1?
All he would need is an M3 rear lip in my opinion. The car doesn’t have a front splitter or under body, and that would help his cause.
It’s entirely based on airflow over and under the car. For this example however, we would be discussing the over aspect.
All the large rear wing would do would be to create drag because the car isn’t as streamlined as something such as a GT car in the ALMS series. It’s all up to how well you can make a car move through the air that it’s pushing around.