Got a good look at a 05 650 at the Chicago bike show. After many questions to the Suzuki people including a tech person? who after a while started asking me questions could not give me any answers as to how the overdrive was setup or actuated. The only outward apearance changes were the clear lenses on the front and rear turn signals and the blue seems a little lighter in color than the 03. The left grip switches are the same with no indication of an over drive. The dash all seemed the same but could not turn it on to see if there was a change in display. The windshield has to be changed by taking off the front trim and unscrewing and reposition it. No other changes looked to have taken place.