I would like to remove that bulky air box and make the bike naked. I would like to know if any of you have tried this. If so what worked? Filters with jetting sizes? I am going to buy a range of jets but I have seen a tuning kit with air filters on a japa site http://japan.webike.net/products/1791054.html. Has anyone used this? Im going to use my stock battery and just cut out the batter holder off the air box. How many turns were done, what size jets (pilot and main), and what air filter? Also was it necessary to add washers to the shim?