2008 challenger 180 se supercharger clutch washer

[ovntguy]

I just bought a brand new 2008 challenger 180 se. Does anybody now how to tell if it has ceramic or steel s.c. clutch washer. The reason I'm asking is because my engine doesn't have the big stainless steel pipe that i seen on other 2008 models while i was searching for a boat. Mine is a cast pipe instead. I was thinking maybe I've got a 2009 model engine in a 2008 model boat. Thanks.