Hey there Gearheads and Bimmer dreamers I'm sure this thread has got history as well as legs, but I'm currently planning my next mod and have chosen upgrade my 2.93 differential on my 00 323i to a 3.46. I'm wondering has anyone upgraded and is 3.46 a little too ambitious and maybe I should consider the 3.15. Any-who, get back at me with opinions as I'm planning this upgrade for sometime in May 2K7. Happy Motoring...