In a nutshell, the EE supercharger kit adds a little bit of power for a lot of money, if you leave it alone.
People who wanted more power (argh, argh, argh) for their money and put a smaller pulley on the supercharger are the ones who blew up their engines.
At this point however the newest Gen 1 will be a 2005 with 40k or more on it already, so it would probably be a good idea to rebuild the engine before installing the supercharger.