BMW E36 Big Case Differential Conversion Kit

The US E36 [M3 and 325/328] differential uses a 188 mm ring gear.  The Euro M3 used a 210 mm ring gear which has been proven to be stronger than the standard US M3 differential.  This bracket makes it possible to bolt in a differential from the E32 750i or E34 M5, which have a 210 mm ring gear.  These differentials are commonly available in 3.15 limited slip as well as a 3.64 limited slip and a 3.73 LSD from the M5...and best of all, they are inexpensive to buy.  The Rally Road Bullet-Proof Differential Conversion Kit includes everything seen in the pictures. All you need to add is the differential and about an hour of fabrication work! Requires removal of stock front mount and welding of new bracket to subframe. Made in USA.