Boosted air temp

I use a V1 T trim in a race boat application and have seen the ouptut temp from the SC go as high as 350F, we race for around 40 minutes and I have sufferred a number of ceramic bearing failures and now have 2 superchargers which we replace parts every year. Does anyone else use these SC in a longer form of racing? since we use the Motec ECU we have considerable data logging and I would be interested to also know what temps others might have seen in the gearbox housing as there is a place for a temp sensor on the case.