I have a 1979 Chrysler 100HP Outboard 4 cylinder that needs the cover (cowling) replaced.<br /><br />It is a model number 1007H9A.<br /><br />I have seen a cover for sale from a 1977 120HP (model number unknown - might be able to find out). This is also a 4 cylinder.<br /><br />Does anyone know if these covers are interchangeable?<br /><br />Thanks!