after getting some inquiries about lsd units and all you need to fit them in a m3 case i took a pic of a complete conversion package consisting of:
- any clutch type or helical lsd unit like my own (pictured) or drexler, os giken, wavetrac, ...
- two side flanges (same length)
- two bearings with according races (or you can reuse the old ones if you can pull them off the oe lsd without destroying them)
- two flange seals (if you replace the bearings/races)
today i disassembled a "m235i racing" drexler lsd... nice stuff... i will take some pics of the rebuild... stay tuned...