OK so a guy wants to trade me his compleatly stock banshee for my Chevy mud truck. Only problem is he said the bike needs top end rebuilt. He said he's getting a set of pistons and cylinders from a guy that bought them new and only started the bike then something went wrong in bottom end so hrs parting out. Hes supposed to bring the bike and parts to my house friday so I guess my question is what should I check for to make sure that's all that's wrong with the bike? He said the new pistons and jugs are 64.5?? Does this require an oversize gasket kit? Any and all help or feedback is greatly appreciated. My truck is worth 2500 am I getting ripped of. O yea the bike is an 05