*blink* oh, yeah, so it is... (OK, I give up now, over to my betters :D)
 
 

From: Cully Paterson [mailto:cully@supras.org.nz]
Sent: Tuesday, 22 July 2003 10:59 a.m.
To: Supra Club of NZ Mailing List
Subject: [sconz] RE: confuzzled about my diff :s

You mean the large gear at the bottom in the third pic?  That's the input shaft....  kinda common to all diffs...
 
http://www.billzilla.org/trdlsdbig.jpg LSD cutaway diagram showing worm gear internals.