1hz rebuild

Hi there I'm after some advice, im looking at a 80series with a 1hz and ive been told that it had done a head from the thermostat seizing causing it to overheat, he has rebuilt the topend of engine replacing the head etc. Just wondering if later on down the track if there would be problems. Any...

Hey guys, I want to rebuild my troopy 1hz and my uncle told me it could work without pulling the engine. Is it possible? Easier? What do you reckon? Thanks in regards Jan