Hi, can SE30 run any diff that shipped on an E30? My E production e30 uses the 4:10 lsd. Its great for starts and coming off of slower corners. Beyond that at most tracks I find myself always at the redline in 3rd and needing to shift (or not) at inopportune times. So I run out of revs. What diff do most of you run? Do you tend to stay with what you have or swap them according to the track you are at?