Originally Posted by Josh1a1h
In the long run I would probably do the m3 diff swap once I familiarize myself with what's involved. I heard the m3 diff is a lot better than the quaife... But I am not at all knocking the quaife as it is awesome!
Idnan's done it, and I've all the parts ready to go in myself now - booked in for 2 weeks time. We've both got manual 335i s.