Front Disc Conversion-Proportioning Valve and Master Cylinder

I have purchased an SSB-W153 front brake conversion kit, and was busy reading the instructions, and found out I need a different master cylinder and a proportioning valve.

After digging into it appears to me that someone before me has already replaced the master cylinder with the one needed for disc brakes. According to a youtube video I saw, a drum brake car would have had a "double hump" master cylinder, and the one I have looks like a after-market cylinder of the type used on the disc brake cars. Am I correct on this?

The proportioning valve I'm less sure of. I'm not actually sure if I have one already or it's just a distribution block (which I assume)

It looks like I could get an after-market adjustable one, but would have to find a place to mount it on the frame. There is also the PV6070MOP style that I can buy, which I think is both a distribution block and a proportioning valve, that will mount in the distribution block's location, but will need some changes to the tubing. I am concerned whether or not it will fit my car. The link below does not have a 68 barracuda listed.

PV6070MOP - O.E.M. Mopar Proportioning Valve - | Disc Brake Kit

As always, thank you for any information you can provide

View attachment 1715216021

View attachment 1715216022

Where did you end up mounting your prop valve.. im in the same boat.. not sure where I want that thing.