NLA - Used limited slip diff (E21), 3.64:1 (none available) used limited-slip diff., in rare 3.64:1 ratio (also have 3.90 available); call if you want custom slip % (for an add'l price) or a rebuilt unit (call for current pricing on that too); need redrilled flanges & spacer kit ($100) to install in a 2002 Price: $1,500.00   Quantity to Add:   CONTACT US AT BMWSALES@2002AD.COM 1-800-4-2002AD 909-629-1955 outside of the USA COPYRIGHT © 2002 AD, ALL RIGHTS RESERVED.