My supercharger has a "rattle" sound now (mainly at startup and idle) and it is a bit embarassing, so it's time to replace my bearings. Does anyone know the part numbers for both the nose bearings?

And now that I am in search of bearings I have found that I may want to go with ceramic bearings? It seems that they may last a while longer from what I read on the net and they don't seem to be TOO much more if it will last three-five times longer. Any opinions on these in a offroad machine that sees a lot of cold weather as well as racing temps in the summer at the track?

I also see a Viton seal as an upgraded seal and will probobly run with that.

I can't seem to find Alpines number anywere if anyone has it it would be much appreciated! Their email address keeps bouncing back my emails.