Already have the taillights, exhaust, suspension, stage 3 software, limited slip,carbon fiber intake, etc.
my car:
http://www.caranddriver.com/reviews/...specialty-file
Dont want a "proper m sport body". Have driven 2008 M3, CLS63, my 335 and for how I drive and what I like, the M is at the bottom of that list.
I dont like the look of the new CLS, and would never buy one new. They depreciate faster than they drive. 40-50% over 2-3 years. I dont want to save up my money then flush it down the dealers toilet, but if you have the money then knock yourself out.
You asked about Mercedes C63 compared to BMW M3 and you arent getting it for 2 years? Come back and ask then, 2 years is a long time and I am pretty sure the cars will be a little different than they are now.