I bought an OS Giken LSD from Steve Weiner at Rennsport. Price increased immediately
after I bought it (very atypical for me - I usually get the first one at the higher price...). I paid $1800.
I was
planning on having it installed by Charlie Murphy but it turns out Hoophead has both the special tools and knowledge about installing them.
Still waiting for OldTee (whom I know is doing nothing but eating, sleeping, and Dorkiphus) to post a couple of the transmission tear-down photos.