S12 LSD conversion with S14 bits query

[s13eater]

you need 2xs12 short shafts, (passenger side), then shorten 1 of them by 8mm by grinding the end and deepen the grove on it so that the snap ring fits, then the other shaft, you take the splined end off and fit the flanged end on off of an s13 shaft, then you use the pot joint out of the s13 diff into the s12 diff, which mates up to the flange on the shaft.