ddmtuning has great m3 bumpers made out of polyproplene and this material is awesome. I have the same bumper on my m3. It is exactly the same as the oem one. Just make sure you get it painted by a good shop. It should cost you around 250 including shipping. Its a great deal. message me if you want a good paint shop. My shop did an amazing job.
RMP Motors For The Win!!!!!