I wonder if only cars that race the Le Mans 24 hr got the LM Aero package. Also, do the LMP3's have any aero adjustments like High and Low Downforce? It may be the Standard is the only option.
It may be the graphics on the car don't change.(i.e. the dive planes are there for any config) But I took the Norma out for a quick dash down the back straight at Woochoo's Le Grand Circuit. Standard High downforce hit top velocity at 270kph(using the stock setup) Then using the low downforce setting, the top speed was much higher 285kph. My test was done with the New UI, but I wouldn't think that would make a difference.