s14 diff fits handy enough into s12 casing. just swap crown wheel and put back in. shafts are another story. theres one s12 shaft shorter than the other. can't remember which side it is though. anyway you need 2 short s12 shafts s13/14 diff and inner drives. the left hand s12 shaft needs to be shortened to avoid shuddering. little time comsuming but worth it if you want a bit of sideways action
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