They are great old motors and as Buccaneer says if the compression is good (110+on both cylinders) most everything else can be addressed. Pull the gearcase drainplug and see if there is water in there. If you see water, it will need seals replaced. Will most likely need coils, possibly points and condensers and a carb rebuild. And of course an impeller. This could easily cost $150 for parts. Did it come with the fuel tank? I personally wouldn’t pay more than about $100-150 for the motor and less if no fuel tank is included.
