Hey Bob, think there would be room for a 19" rear wheel on the C5? I think the 19" front with 18" rear is what you want now knowing that the frame is different but just curious.
Also, any thoughts on adding a steering damper to the C5 as is? It only seems to get waggly when you don't pay attention, a steering damper could minimize those errant rider inputs. Having grown up with air cooled VWs I could see trying to tack one of those on to the lower triple, maybe hide it under the tank if there's room.
Scott