to all of those whom are fortunate enuf to have the gleason-torsen units...be thankful. i know a number of racers who also have these units and swear by them. a few years ago, i went thru a friend of mine [35+ years senior engineer at gleason works here in rochester] and we searched for months to try to find a "leftover" unit [even contacted one of his coworkers in japan] with no luck. he then put me in touch with the senior engineer at zexel-torsen [zt/also here in rochester], i struck out there as well. i did speak to the r&d person about a group buy-but it seemed that we'd have to purchase 250+ units and then find a supplier who would b willing to 'guarantee' another 50 in sales per year, to absorb the tool up costs. zt still manufactures the units, gm, subaru, toyota, hummer, etc.-just not for our z cars. this was of course prior to the resurgance in z popularity. i'd b happy to contact them to see if they make a unit for the z32, but i have no idea if the "guts" of a z32 diff would work in the r200 many of us are running. anyone know?? dreaming of finding that elusive torsen diff...