Where did you run the lines from the boot to the engine bay?

 

I drilled a hole in the left most compartment of the trunk where the pump is located, and run the water line under the car, parallel to the fuel lines. It comes up on the firewall behind the intake manifold, and the rest is a check valve and splitters...

 

What size line from the tank to the front? could you add a chiller or ice to the tanks? What about using hard line? I dont like the idea of ruining my bay with tons of soft hoses going everywhere.

 

The line from the tank to the front is 1/4" hard plastic in protective shielding.
There is no need to chill the water. It boils and turns to steam instantly, stealing considerable energy in the process. Room temp, chilled, 60C degrees will not make a difference in the combustion chamber.
You could use a hard line if you like, but the hard plastic works flawlessly.

And yes, I did ruin my engine bay with plastic lines...