From what i have investigated, however DO NOT TAKE THIS AS GOSPEL - I TAKE NO RESPONSIBILITY IF YOU ATTEMPT THE FOLLOWING AND IT DOES NOT WORK
R32 VLSD as standard is an R200 diff. These all use 2 stub axles (the splined shafts that connect directly to the diff center) which have a spline count of 29, and are different lengths side to side to accommodate the offset of the crown wheel in the diff center (to effectively make both left and right distances from end of "drive shaft" to hub the same length). S13's SR20DET and R33 with VLSD models have the same spline count/config, however I am unsure of length etc. The R33 apparently has larger crown wheel bolts which makes install a R33 R200 center difficult but it can be done with simple sleeving to get a R32 crown wheel on a R33 diff, or drilling and tapping for the reverse application.
S14's however are different as they utilize a 3*2 (6 bolt) stub axle arrangement at 120 degree of separation between corresponding bolts. They still use a 29 spline count and same configuration as the R32/R33/S13 tho apparently.
This effectively means that you CAN put your R32 stub axles in a diff made for an S14/S13/R33 etc so long as it is a diff for a R200. However there may be some slight modification on the crown wheel side of things. However, one thing i am unsure of is whether if you buy an R200 diff, such as a Nismo item, what length the shafts are required to be. Reading one of Bubba's posts, apparently, with this nismo item, the stub axles are the same length side to side and are genuine nissan items, indicating that possibly nismo do away with the different length stub axles and use either 2 of the longer shafts, or two of the shorter shafts. Which one I am unsure of...
If anyone can shed some more light on this, that would be great.