In my opinion, BMWs are not the car to "pimp" out. I definitely like that you've made it your own but I dunno about the lack of suspension. BMW is known for it's awesome suspension. To take that away is to mar the very image of a BMW. Furthermore, M3 is a "sport car." It has tighter suspension and therefore needs the springs to have a comfortable ride. But, all the same, I still like you made it your own.
BMW Client Advisor