Quote Originally Posted by JoshS View Post
To avoid the 2nd-3rd spacing problem, why don't you use a shorter rear end and use 3rd-5th? That's what I do in my Z3 6-cyl.
..which is why I have a 4.27:1 diff waiting to be installed (must be small case, too, for the 4-cyl) - out of an E30 318i cabrio automatic - to replace the 3.64:1 that's in there now. The 4.27 will be good for NHMS, but I'll need to swap diffs for any longer track.