Supercharger Pulley
 

Hello Folks I have a 95 Donzi BlackHawk with a 525SC engine, I believe its a Weiand 177 supercharger on the motor. To my understanding there were two Pulleys offered through Mercruiser on of the pulleys produced 4 PSI of boost (which I have) and the other Pulley produced 6 PSI of boost, that is what I am looking for. Does anybody know where would be a good place to start the hunt for this item? I cannot just go to Weiand because Mercruiser altered the standard pulley to insure that you had to come to them to purchase it, I am not 100% positive about this but have had two sources tell me the same story, for what thats worth. Any information on this setup and of course any leads on the where abouts of this illusive pulley would surely be most appreciated!

Thanks much
Karl