Actually those replacement parts are dick cheap. Just type "used car part finder" or somesuch into any search engine and you'll find several sites dedicated to used car part searches.
If that trans is a manual, a used (with shipping) might be $350, radiater cheaper still.
Dude seriously, when it comes to old used cars, better the demon you know. This car's history you know. Another used car is a total unknown quantity and I don't give a crap if it is a honda or whatever. If it's been shit on it could be trouble waiting to happen.
Now all of this assumes there's someone around who has the interest and time to do the work. I could do all that work singlehanded in a weekend easy, but others may not even want to try it.