Found a brand new in box DTT on ebay for $150 ($174 shipped)!
I had 100k on the factory crappy limited slip so it didn't work at all. It also had me worried it was going to blow up my newly installed 4.56's rear so I had been looking around for a DTT or auburn unit.

I didn't want to mess with anything in the diff so I had a local shop install it and it works great.