i wanted mg 82 to have a very reliable and fast moter combo that starts in one kick. idles great .has power from bottom to top....no big bore or stroker stuff here.. 86 by 86 mm just kx 500 at the best that i could come to ps he is a great guy to deal with makes it easy on me to work with him ..two things i like to do in life is work around nice people and make kx 500 s faster agot to do both here ,,,,,,stewart