The header tank is in, just need the right pressure cap now.

Also the heater is finally in and what a job that was, upside down in the passenger foot well, drilling through my favorite material.

This has been fitted in reverse so I don't have to route the feed and return water pipes through the screen washer bottle ;-)

Both units now need rather a lot of tubes and pipes added, some will have to be done after the engine is re-installed, something I'm beginning to think may happen soon!