Comet 108 primary clutch

[Sweet GP246F]

I was considering putting Comet 108 on my 1980 enticer 300. My question is, does the factory clutch have the gear on it to drive the oil pump? Also, has anyone put one of these clutches on, and what spring and can arms work the best?

 

[Yamaha Nutz]

a 108 will not work that is the wide belt clutch you need a 102c with the gear on the back say for the exciter 340-440