I have been going back and forth on adding these panels as well. I think it depends on how you will use your car. I will not be driving it in a any inclement weather so I am not too worried about water getting in there. There was some discussion on this in this thread and see the pics from post #7 without the panels. I think I am going to not install them for now and see how it works with the front splitter. I do get a lot of rocks in the doors so I will need to add some plates in the rear.

https://thefactoryfiveforum.com/show...luminum+panels