"L" series brake line routing, need locations!

I apologize for the barrage of questions in advance, and appreciate the help you all so kindly provide.

I need to see the routing of the brake lines where they are normally not seen, hidden out of sight, and if you are so kind, even where they are visible.

As usual, my "99.5% complete car" , is missing those items and I have to rout things properly.
I was very fortunate to find the 2, three way splitters (original FIAT parts)
in Santa Cruz, CA., at C. Obert, and have the whole shebang from Fedhill (thank you Jon)
including the tubing fittings and flare machine.
Great outfit if you want to roll your own.
Now, I would like to lay out the various items and dry run as much as possible.

I assume that the central tubing, once installed, it stays, as it is routed through the driver's side oval outrigger tube. It is post this, forward and aft, that I need the routing, including the proper location for the proportioning valve.

Thank you.
Regards, Alberto