Need Help Rear Suspension

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I put a previous thread out but still need help on this subject..

I went thru the Chilton VW bug manual to figure out how to properly dissasemble the rear suspension ie. Torsion bar.. As I understand the IRS Arms are under the Torsion bar load and that in order to remove the spring plate some tool is required.. Can some one walk me thru this process... PLEASE..

Also I have noticed that some bug out there use Coil-overs in the rear. How is this done.. Are they expensive.. Does one unload the tension in the rear arms some how and use the coilover set up to provide all the dampening.. Is this worth it for a street car. I understand that coilovers will enable me to better tune my car for the track.. Dampening and ride height.. but will this be over kill.. I assume I have to match this up with an adjustable rear swaybar to take advantage of such a set up..

They reason is that I have a complete 944 rear setup and I am trying to figure out how to safely do the switch..
Thanks in advance
Alex