Ok so I test drove the Buell for the first time this weekend and absolutely loved it. I test drove the Buell XB12Scg. I am looking at getting the XB9Scity and was wondering if there is a huge difference in the power between the 9 and 12? The Buell XB12 seemed a little low in the power and was wondering what mods can be done to these bikes to get a little more out of them.