I have a riding buddy that just put a set of Gen II skis on his 02 MC 600. We also freshened up the clutch, cleaned the power valves and put on new PV cables. It made a big differance on his sled.
Also the front arm on the skid has been moved to the lower hole in the tunnel, sping on front skid shock is tightend up with the limit strap out and soft on the rear springs.
Just like the old ZRs it pulls up the front when on the gas so you have to learn to steer with body english. On the trails, he jacks up the rear spring blocks and it does fine.
Hope this helps,
LOG.