Originally Posted by BSRJIRONMAN

I do have the other diff still, but its from the original Z31 frame, and will not fit the S13 frame. I am picking up another s13 diff on my way home tonight, and I will give it a go.

Has anyone ever had a drive shaft out of balance? I mean, The shaft I got was supposedly balanced beforehand, and looks like it was (has weights welded in spots) but I am curious as to if this carries the same symptoms as I am experiencing.