What bikes can be easily coverted to GP shift with their stock components only? I noticed the newer R1's can and some older GSX's can too. Looking at the 2009 to 2011 bikes, R1 was easily changed by flipping the gear lever arm 180 degrees. Some bikes you can't as the lever will hit an engine component, fairing or something else will keep you from flipping it. I assume more than a 5 minute fix is required for these other bikes.