I run 2BKH sheaves located on page 41 in the pdf catalog
http://www.regalpts.com/PowerTransmissionSolutions/Catalog/Form_8972E.pdf
use the calculator here to get your sheave sizing and belt length
Pulley Calculator. RPM, Belt Length, Speed, Animated Diagrams - Inch
I run BX V-belts. Get all your part numbers and get it all ordered on Ebay.