Do Underdrive pulleys underdrive the S.Charger?

Did the search thing and didn't get the question answered. Does running underdrive pulleys enderdrive the supercharger?
they are the aluminum set i think ASP's id have to look at my reciepts
Was wondering cause i have a late model Sup. Charger , early model pulley

Thanks
Tony

No they don't underdrive the supercharger, only the accesories.

David

Thank You...