I have an 86 930 turbo box that has just been rebuilt by G-box. I purchased it in this condition so I called G-box and they told me that all sliders, dogs and syncros were replaced with new. For some reason the LSD (marked /12 on the bottom of the case so it was an LSD originally) was removed and the box has an open diff now. I posted it for sale on Pelican http://forums.pelicanparts.com/porsc...6-non-lsd.html and no interest. I decided I would add a new Guard LSD to the transmission if someone wants it that way. My price is $4400 with the open diff, $6500 with a brand new Guard LSD. Note: the drive flanges are not included at these prices. If interested, make me an offer my e-mail address is jandsaustin1 at verizon.net. Thanks (make your wife a great Christmas gift)