Wtb 3.25 or 3.73 LSD diff

[gotEdirty?]

I have a 1991 318is
With an m20 from a 325is
I am pretty sure the diff is a 4.10 and it revs
Super high. Just looking something that will not rev as high
Seattle area or pacific northwest
Tha ks!

[gearheadE30]

Wrong section.