Do you have a belt in it currently?, you can take it to Napa and they should be able to measure it and come up with something that will fit. Measure the width of the groove in the sheave and the depth if you can.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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