Checked the archives and found several discussions about supercharging the 850. Unfortunately, there seemed to be no resolution to those discussions. Does anyone on the board know of a succesful single or twin SC applied to the 850? Would like more info on what was involved. Specifically, I'm looking for location, fuel pump swap requirements, injector changes, max boost without modifying heads/head gaskets, location of air flow sensor upstream or downstream, as well as any other info you may know of. Thanks... - John