Title says it all. I'm looking to trade my 1986 Kawasaki Kdx200 for a 1984 Atc200[?] I don't know if it's an S , ES , or M. I don't really know the differences so i can't tell. And i'd prefer not to buy something unless i know what parts i can and cannot buy. Can someone please tell me the differences in those modesl? S ES M thank you.