On August 11 of 2006, I installed Powerdyne's K10526-201 supercharger kit on my 2002 S10 Xtreme.  Recently, shards of the inpeller fins were blown into my engine, destroying several cylinders.  I replaced the V6 and Powerdyne of course, refused to honor their warantee. So I dissembled the supercharger myself to find that the impeller had scuffed the scroll, the impeller shaft was bent, and the puny roller bearing on the impeller was totally worn out.  So much for Powerdyne's 100,000 km reliability claim!  Never buy a Powerdyne!!!