The double nut trick is used to remove a stud without damagind the threads. Run a nut down on the stud far enough to allow a second nut to be tightened against it. Flange nuts with the flanges facing each other will work best. To pull the stud, turn the inner nut - hold the outer nut with another wrench if necessary. Box wrenches work best for this.
As to the double nut trick, it'* a simple time saver. Somewhere, I believe hear the alternator is a stud instead of a bolt and to get the piece out w/o removing the entire bracket you need to take out the stud. This can be done with two nuts. Put the first one onto the stud (Don't put it on all the way), then put the second nut on the same stud and snug it right up to its brother. Take two wrenches or one wrench one socket and torque the two nuts together so they are basically locked together and the flat sides are together evenly. Now put your socket over both nuts and they will stay locked up and you can take out the stud. That'* the magic double nut trick.
00 Regal GS: All kinds of cool stuff.
It'* fairly straightforward. Take this opportunity to clean your TB. You'll need a new supercharger outlet gasket, throttle body gasket, 2 coolant bypass O-rings (yellow, seen in my pics), and I strongly reccommend getting a fuel injector O-ring kit from the dealer.
I'm moving this to Forced Induction. Please try to keep all Forced Induction topics there.
Any Supercharger question gets answered quicker here than anywhere. A few of us keep a sharp eye on this forum because of all the Raw rebuilt SC deals out there, and the misconception that they can't be rebuilt.