This is very important (and deserved its own thread IMO).
Some of the design features and perhaps some that are causing many of us to call a bit of "rice" like appearance on the car may be missing from the "base" E92 M3 or only present on the M3 CSL model. I would bet the following are reserved for CSL only: rims, tires, extra vent holes on hood (the ones near the power bulge), CF roof, CF interior trim. I think all the other design elements are 99% production.
In case you have not been keeping up and want my "proof" of this assertion see these two almost identical posts: