When you say Supercharger Pulley,
Which one ?
do you mean the snout bearing ?, if you do, they are a common bearing for electric motor's,
keeping in mind, there is a special way of pulling the snout down without damaging the housing.
You may need to replace the front snout seal also.
I have found a few places that sell the bearings required for the snout.
I replaced all the Bearings in the 6 Pulleys on my Super6, including the front and rear snout bearings,
While I was in the process of doing them all, I also replaced the both Bearings in the Alternator.
With the plastic pulley, I threw that the s__ house, and got a metal one from the wreckers some time ago, and replaced the bearing in that.
I then made a list of all the Bearings required, to make it easier for future replacement.
The rest is history,
And forgot to mention, nice and quiet now
