What year Honda metropolitan had a restriction plate?

The Honda Metropolitan II models are restricted to qualify as a motorized bicycle in various states (not all states). Honda restricted it by use: * Restrictor plate in the intake manifold* * Milder camshaft * Different variator assembly (and weights in some years)* * Ignition (computer/wiring harness) * Carburator throttle slide spring * Needle Jet * There may be restriction in the exhaust (UJM does not believe so) Removing the restrictions will improve acceleration and increase the top speed from 25 mph to close to 40 mph (close to the top speed for the unrestricted Metropolitan, which also has difference final drive gearing). All the parts for unrestricting the Metropolitan II are about several hundred dollars and takes several hours of skilled labor. The parts are for the standard Metropolitan scooter. Search online - Honda Metropolitan restriction. * = Minimum changes for maximum results. Remove the restrictor plate from the intake and change the variator drive plate (and rollers to the green ones) for a quick and easy "fix". A few links: http://www.urbanscootin.com/forum/ http://autos.ph.groups.Yahoo.com/group/HondaMetropolitan/photos http://www.YouTube.com/watch?v=iqlqK-9r1xA&eurl=http://www.YouTube.com/my_videos_edit2&feature=player_embedded http://www.YouTube.com/watch?v=pK40P33Zi0M Also - The 2007 and up normal "Met's" also have a restrictor in the intake, altough no where near as restrictive as the version used on the Met II's. Removing it does slight increase performance.