Expansion/header Tank

[KevinW]

I would have thought teeing off from top and bottom hose is the easiest trick. Then just use the thermostat hole / header tank as a filling points. I think you'd need have a vent on the engine manifold on the engine side of the stat, or a trickle hole in the stat, or a trickle bypass on the stat housing or you'll be filling the engine via the lower hose until a nice air lock has formed at the top. I ended up with something like this, and so it kept boiling or peeing slowly on the ground via the exp tank. Getting all this air out is key. Jacking the rear helps raise the exp tank higher than the rest of the system, so encourages the air to escape (in a plume of hot coolant).

If i've got any of this wrong hopefully others will chip in. I dont profess to be the worlds expert, just these things worked for me.