Nissan 240SX Performance Modification/Differential/How to weld your stock diff

Weld side gears to spider gears and/or to case.

Welding the gears should involve 8 small welds with plenty of redundancy and it is removable.

Welding side gears to case and removing spiders produces a simple spool but requires a good weld.

Welding everything will give the most redundancy and strength for extreme use.