motorcycle carb advice

Ill wager it has a modified air box, or no box and /or KnN type filters on it. There is almost no way in the world for a novice to tune that set-up. Heck, even I sometimes give up.lol. If Im right, dont buy it unless it comes with the factory air box included. Trying to find a used one can be challenging, and a new one may cost a fortune.