You know to be honest I am not sure what all will interchange I sure a few parts will but for the most the 372 is a more tweaked version more epa friendly a much better air filter system, chain adjuster on the side case, see through gas tank. Just little improvements that mean alot if you run it on a regular basis. Madsens has 372s for right around 515$ for a flush wrap handle they will deliever it to your door for an additional 20$ and generally kick in some sort of promotional item to boot such as free chain or a spencer log tape. Without seeing the saw and knowing what kind of condition it is in I would put no more than 300$ in it tops. It had better be clean for that price. Hope that helps...Wade