Engine Mechanical problem
1991 Toyota Camry 6 cyl Front Wheel Drive Automatic 204000 miles

I need a new crankshaft pulley. Mine has had the rubber grooves worn/burned/scraped off. I understand the serpentine belt for the alternator & water pump will not stay on without the grooves.(??) I am having extreme difficulty locating one of these pulleys.
What years of Camry will match up for crankshaft pulleys?

Thanks!