New tank.

So here is the lowered expansion tank. No its gone fit for sure.
I also moved the connectors to the back of the tank because its looks much better.
This expansion tank its gone work perfect for sure and never again any problem with the air in the coolers. Full power for sure.

Here few pictures how its looks when its finally ready and at the place.

If something is of interest to this, I can do more tanks at once. I still can't say the price. But this one works at least, that's for sure.
Let men now if somebody need one.