I think you should cut out the oil cooler opening in the RS spoiler and put in some black painted metal mesh, even if you do not have a front center oil cooler.
I never liked the RS spoiler becuase of that big barn door of an air dam messing up the sharp, purposeful lines of an early 911. The RSR spoiler had the oil cooler cutout but is too wide for RS flares.
JMHO, You do what you want- just make sure to enjoy drinving the car.
