This was my immediate thought. This aux tank is HUUUGE, when your're sitting on it, it feels as big as my GSPD. I iimagine the crashbar extensions will also be $$$$. The battery/air filter will always work perfectly, unitl the day you can finally afford the gas to fill this tank, then you'll herniate yourself taking it off.
My thought to TT, make a single seat, use the passenger space for a TWO gallon tank.