I just purchased a serpentine setup but I have read enough about crank wobble problems . I want to upgrade the solid pulley to a clutched one. Well I cant figure out which alternator clutched pulley to buy. THe one at metalnerds is waaay too much at $200 and all the cheaper ones have the worng part #. Worst comes to worst I will just buy an alternator with the clutched pulley installed. IF ANYONE KNOWS WHERE TO PURCHASE THE CORRECT PULLEY PLEASE LET ME KNOW. IF you know of an alternator that comes with the pulley attached let me know also. THanks in advance.