http://ozdat.com/forum/viewtopic.php?f=55&t=34746

H190 LSD unit from late 720 truck 29 spline - 680 aud
large pinion bearings.

2-way clutch type, that can have the plates stacked differently for more lock up.

Vehicles that used these 29-spline diffs:
S110 200SX '82-'83
S12 200SX '84 with CA20 engine
520/521 pickup*
620 pickup*
Some 720 4-cyl, 2 rwd pickups except the 1st production year.
D21 4-cyl, 2 rwd pickups
and maybe the early '80s Maxima wagon, if they have 29spline axles.
(*must use iron carrier from later vehicles)

These take the same internal parts as the Nismo R200 LSD

770aud posted anywhere in Oz