that's not stock exhaust is it? stock isn't always so bad fellas...I say leave the outside stock, go FBO with meth, E85, and RB's and kick the shit out of all of the "modded" cars on here spending $10k+ on CF lips, blingy headlights, and brembos they don't use. //rant
EDIT: maybe that is stock exhaust. the tips look thin to me for some reason though...maybe it's just the pic.
Cobb E40 PROtune by Jake@PTF/RR catless DPs/aFe DCI/ETS 5" FMIC/Alpina B3 TCU flash/BMW Perf. Exhaust./BMW Performance Style 313s/M-Tech Rear