whoa great thread!
I have read it all, but just want to confirm: if I put in an E9x M3 diff, I will also need the half-shafts right? But I could still use my existing 135i driveshaft?
Anyone have any contacts for an E9x M3 diff? I wanted a wavetrac but can't seem to source one at a reasonable price, or they just wont ship.
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