There is some interchangeability between parts from the 1982 through 1984 BIG REDS. Note that there are some big differences between these models. The 1982 and 1983 200E models were chain driven with no reverse. The 1984 200ES models were shaft driven and have reverse. This article will only cover the main components that are interchangeable. Note this information is based on my research and my experience. Keep in mind that I am assuming that the parts are all OEM. I say this