When I did mine I used the cheap tool from Harbor Freight.
I also bought a spring compressor set from them,
This looks like the one I used.
https://www.harborfreight.com/3-4-quarter-inch-forged-ball-joint-separator-99849.html
Make sure that you leave the nut on the ball joint, just turn it back about 1- 1.5 turns,
then Apply the ball joint tool, use a few turns on the screw to apply some force, then tap with a HARD hammer, I don't think a soft mallet will deform the taper to release it. (or 2 hammers , one held on the opposite side your tapping on, and use force on the "taps")
Try that a few times, then apply a little more of a turn to the tool and try again.
When the taper releases it will go BANG. as the nut on the ball joint shaft slams down.
Now apply the Spring Compressors and compress the spring a millimeter or so so that you can remove the nut.
BE CAREFUL, THE SPRING JUMPING INTO YOUR FACE MAY LEAVE A MARK, TAKE SOME TEETH, OR BOTH
I can look in the Garage later tonight for part numbers if you need.
I don't have pics or a thread, but I did the front at the same time I did my rear end.
A couple of pics of 142guys car in my thread as well, may be helpful
https://forums.swedespeed.com/showthread.php?374417-Limited-Slip-Differential