I've noticed that KZ1000P front wheels are 18". They look like a different disc mount, looks like the centre of the hub where the disc mounts is bigger than a Z1100R wheel, which is what I am looking at, but I think you'd have to be looking hard to tell.
It looks like the disc mounting bolts are on the same PCD as the holes between them, but on a Z000/Z1100 they are on a smaller PCD.
Anyone else know if there's any other major difference?
Incidentally, the KZ1000P and Z1100R rear wheels are the same casting number and the KZ1000P is plentiful in the states...
http://www.ebay.com/itm/90-Kawasaki-KZ1 ... 52&vxp=mtr