Having just adapted my Gasser OEM wheel to a Yamaha fork, I experienced there are at least two things that differ:
Front brake disk is smaller diameter on the Yamaha (250mm on the Yamaha aganist 260mm on the gasser). Can be made to work by buying / making an oversize disk or moving the gasser's caliper.
The front axle diameter on the Yamaha is smaller (could be fixed with other bearings, I presume).
The rear one I don't know, but unless you usually win the lottery, I wouldn't bet on it.
