I haven't looked at it yet, it's a 7 hour drive from here and the photos provided are not very good. I have a 70s glass boat now and I've talked to a lot of other people with them so I have pretty good idea what to look for. I am trying to talk to the owner to try and get more information.
There is a "newer diesel" engine so the Atomic 4 has been replaced at some point.
Good point about rudder gear, that needs a closer look. And of course the rigging is suspect but at least it is a fresh water boat.