Hey there guys, I'm new to this site, although I am a veteran from clublexus.com, which is where all my people are and I highly recommend you guys to visit. In any case, there is a tried and tested supercharger available for the Sc400, and I believe the LS also since they have the same engine. Im going to try to find the link to it, it is not made by toyota, but an independedt company. It costs $4,800 delivered, and adds approximately 100 horsepower and similar torque gains.