i posted pics of mine. i have the 18L tank which requires the comfort seat. it came on the bike when i bought it. i have to stock stuff but after looking at the stock seat i have not changed it. Most people talk about the vibs and i didnt notice it as much i think because of the comfort seat. the only thing i do not like about the seat is the downward angle towards the front. I have not had mine for long so one time i got 170 miles of mostly hard woods riding and some street until i hit the reserve. Changing the tank is easy becase not bolted to the radiator. the cap locks. the tank does block the choke- but i just feel around and can still get at it. I dont notice the extra weight of the gas and i ride pretty hard in the woods- ofcourse i do not know what the stock is like. the bike still feels light to me relatively speaking.