When you say fixer upper--that can mean many things, what does it seem to need? On observation and with driving it can you tell what systems are ok? Also how is the interior, body, glass, etc. This could be a good deal at the right price, or a bottomless pit that will take way more time and moneyt thatn it is worth. Painting it alone can be expensive unless you do it yourself, then its a matter of time and effort.
Sometimes these older Mohos are way worse or if you are lucky somewhat better than the previous owner thought ( or disclosed)