I have a torsen out of a 94 miata the torsen is in great shape and comes complete with aluminum housing. I would recommend replacing the bearings before use because it was from a 100k mile + car.
PRICE : $550 shipped

I also have a complete black fabric top in almost perfect condition from an 04 mazdaspeed complete on the frame from the car with all the seals and latches and everything
PRICE: $350 local pick up only.... contact me if you are serious about shipping this

photos of top are here..u all know what a torsen looks like
http://s224.photobucket.com/albums/dd135/gdnimr0d/

call me at 754 244 1755
or email me at ryanckaufman@gmail.com
thanks
Ryan K