Why would you want to use early-90's (W)D21 gears in a late-model (W)D22 diff?
They should work, as far as I know the only difference isn't the gears themselves, but in the OD of the pinion bearings.
Either way, the Nismo Detroit locker for a D21 still wouldn't work. The late-model 33-spline axle shafts won't go into a 31-spline D21 unit, gears not withstanding.
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