So i got my first 4-stoke a 2001 yzf426 for $1000. Got it home revved it to much and blew a valve(maybe because the previous owner never adjusted the valves) So now i have to put about 1000 into it. My question is: Will a 2003 yzf426 cyclinder head fit on a 2001? I dont really felling like paying $740 for a new one and they are slim on ebay, any suggestions? Also the cylinder needs to be replated is it worth it to just bore it out for a extra $200?