What year is this diff out of?

Looks like a Z31 diff to me... 83 or later maybe? Finned cover and the lenght of it says late ZX model.

It's a short R200, so it's Z32 NA, S13+ or R32+.

No good for an S30....

looks like a vlsd from an n/a z32. does it have an orange sticker on it reading "VLSD" ?

>>>Z32 NA, S13+ or R32+. <<<

Agreed. That is NOT the way a Z31 is supported.

steve77

a Z31 or Z32 diff, thats for sure, and if you also look it looks to use stub axles like the 240-280Z's not CV shafts.

Looking at it my best guess would be from maybe a 240sx or the like, that isnt from a Z car.