I came up with a better plan on the brakeline plumbing, to retain the differential pressure switch, mounted before the line lock solenoid. I made a mounting plate attached to the MC bolt.

I moved the differential pressure switch onto the firewall, next to the master cylinder. The front port can then go to the line lock, and then down to the brakes. I just used 12 ga. wire to mock-up the brake line routings.

Now, I can finish the brake lines as soon as my new line lock arrives.

John