AEM makes a set that replaces the crank and alternator pulley. Esslinger makes a crank and idler pulley. ASP makes a crank. Others as well.
I have the Esslinger set on my car with a 715 belt (note that size, since Esslinger sends the wrong lenght).. No complaints thus far.
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Perry
Contour-L Admin 96 GL perryw@bellsouth.net