Originally Posted by jayc72
Do a search for both carrier and differential. Also do the search on 94 and 99 that'll give you the most hits back.
I'll second that one. After a month of fruitless searching I finally found this site this morning. 10 minutes on the web and three phone calls got me a complete diff assembly for $340, including shipping from Yuma, AZ to Carlsbad, CA.
I used car-part.com, and searched for "Carrier (see also Differential)" and "w/locking" for a '94. Don't be afraid of the "locking" part, from today's phone calls I gather that's just how Americans think of limited slip diffs.
The Yard I bought it from (Reliable Auto Parts) described the car as a '95, burgundy paint with tan leather. That combo was unique to the "M" edition. So I asked for the VIN, then called Mazda customer service, and they verified that it was an M package car. All the M cars got Torsens.
Wallyman over on the MiataPower list clued me into that tactic. If you search the FAQ over on M.net, there's a good listing of the various years and packages. Seems that all '94-'97 cars with tan leather had the Torsen as well. Granted, there are a few cars with the Torsen that didn't get the leather, but it seems to me that this is a good quick-n-easy searching technique.
*** EDIT ***
It was recently pointed out to me that cars with an automatic transmission, even if they have tan leather and/or the M package, do *not* have the Torsen diff. Bear in mind.