The Harley belts are completely different. Narrower, different tooth spacing, Harley belts have round teeth....no idea on length.
Some Kawasaki bikes used a similar pulley and belt combination. The EN450/454 and a KZ400. I believe the belts are 4 teeth longer on the Kawasaki's. The pulley from the EN bikes are 25 teeth instead of our 23 teeth and with some work can be adapted. I am currently working on adapting a KZ400 rear pulley.....it is going to require redrilling the mounting holes, making a sleeve for the hub, and maybe moving the pulley in or outl
This thread has some good information...although some of the earliest comments might be outdated.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1334871333