In order to figure out how these gpx600r engines fit in its frame and to borough some mounts I searched for a gpx600r frame. Milko from Tolkamer sold me one.
In his living he stored something really pretty. Milko has a z1000 equipped all kinds of upgrades. A new front fork with large disks, I guess borrowed from a zzr 1000, hydraulic clutch and a shortened rear-end.
I might use the radiator mounts, definitely use the fork limiter and steering lock cam.
Check the cams in detail. They are different from a gt550.
Below the gt550 frame where I will mount the gpx600r cams.