I think if it is not leaking oil yet, you should take it apart to see if the coupler is bad.
If the coupler is bad, it is just a $34.00 part and only takes around 1 hour to replace it.
Now, if your supercharger is bad, the best thing to do is to source out a rebuilt one.
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around $1000 us
there is a video on youtube.
10000 dollars
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