Just ebay spares / repair it and be as accurate as you can with the "what's wrong with it" piece, photos will help.
If it's cooling system related (and it sounds like it'll just be the rad / hoses/ expansion tank) likelihood is it'll be a doddle to fix so shouldn't be hard to shift.
If it's cooling system related (and it sounds like it'll just be the rad / hoses/ expansion tank) likelihood is it'll be a doddle to fix so shouldn't be hard to shift.