I have not had good luck with the Naraku pulleys at all. They don't seem to last as long as the stock, though they do perform well enough in general.
The Multivar is awesome! Thanks for this good write up on your progress with it.
I have tried the Gates belts, and the Malossi, and the Naraku. I almost hate to say it, but I honest to goodness believe that for our Kymcos, the OEM Bando belt is the best out there.
Keep up the good work dude!
~Josh