1968 Dart Proportioning Valve Plumbing? Which lines go where?

Hi FABO members,

I'm trying to put the original brake proportioning valve back on the car. I have a vacuum assisted 2 chamber M/C that was powering 4 wheel drum brakes on small bolt hubs. I had a guy switch out the front drums for a small bolt disc brake setup I ordered online and he installed an adjustable proportioning valve which is now leaking. Id like to go back to the old original brass unit which I still have but I want to make sure it is plumbed correctly so the brake light switch works right etc. Does anyone have a diagram from the Factory Service Manual saying which ports are for what lines?

Thanks!