I'm selling it because I just ordered an M3 LTW wing.
The factory M3 wing provides some, but not significant downforce. Since my car is a dedicated track car, I'm after proper downforce. The M3 LTW wing seems to be about the best available for the E36 chassis.
I'm getting a custom splitter built up too, but I'll see what happens there.
I'm not really an asshole, I just play one on the Internet