To MD: '83 GPZ 750. '77 to '83 KZ 650, are just a few of the Kawasaki plates that fit. It requires a different arrangement, and number of plates. The total stack height must be 2.000", or very close. The Kaw plates are same thickness as the 2 thick plates in Busa. The steel plates are .010 to .015" thicker on Kaw. I use 8 thick plates, with a combination of Busa, or GPZ plates, to get desired stack height. If you get Brock device, use shims. If not, use 2 14mm spark plug shims, under each spring.