It was difficult to find a good mounting location. The fender well panels are too hot because of the headers. Every where in the engine compartment is too hot. Under the dash was too difficult to plumb.
Say what you will about Harbor Freight's crappy Chinese tools - I'm pleased with the results of my first ever attempt at bending and flaring.

The tubing is not as close to the header as it looks in this photo.

I'm fighting leaks - but none of the flared fitting are leaking - it's the flare adapters into the cast iron that is leaking.

 Bleeding is a problem - I may have to add a bleeding tee at the top of this loop.
Here's the old master cylinder and valve.

The proportioning valve used to be under the master cylinder - almost touching the headers.