1967, disc brake, proportioning valve, on the rear axle?

Again, all the links and images I had saved for this topic have been lost. I’m adding power disc brakes to the front, and so for the rear, I want to install the proportioning valve. I tried to look at/for an image of the brake lines, and the valve itself, and am just not finding it. Has anyone got a picture handy of the valve on the axle assy?

On a 67 the stock p valve is on the rear floor near the trunk kick up on the drivers side. At that time overhaul kits were not avail so i gutted the valve

, had the shoes relined and arc ed at a cluch reline shop. It was a lot better but ended up changing wheel cyl size , and the car is working great withot a rear p valve