Price includes labor to machine welded ring gear off of stock differential. BMW ring gears are then drilled and threaded for bolts. ARP diff bolts included. Rear end pumpkin must to sent to Autotech/Wavetrac for service. Buyer is responsible to to and from shipping. Rear end will be sent back with Wavetrac properly setup in rear end. Lead time for this service without shipping is approx 3 weeks.
Contact Us for more Info on procedure.