Back around 2009 I was thinking about purchasing the 928 Motorsports supercharger kit for my '89 328. In fact, I had intended to do so but the IRS decided I owed them money that year, so I couldn't afford it. Subsequently, I lost interest but it is now rekindled. One thing that concerns me is that the manufacturer states it will add approximately 50% more power. In my experience, that is beyond what most cars' OEM systems can withstand without modification. 30% increase is a generally safe without other mods to the engine/drive train. Has anyone purchased/installed the 928 supercharger and run it successfully over several years WITHOUT any issues with the stock drivetrain/clutch, cylinder head gaskets, or other components?