Changing from drum to disc brakes - factory correct set-up, 1968 Charger R/T

[Magnumcharger]

This last weekend, I drove out to see about a four-speed console and shifter that I saw for sale on Kijiji.
While there, I found a complete (spindles, calipers, rotors) 1968 Disc brake set-up in a box.
This I acquired...

Now I have the beginnings of a disc brake option for my previously drum brake-equipped Charger R/T.
On my drive home it occured to me that maybe I'd need the proportioning valve, booster and master cylinder to go along with it.

I emailed the seller about such and he sent me a couple of pictures of a proportioning valve that he had in a box. (Pics below)
Is it correct?
My friend Kori tells me that there are actually two prop valves, one behind the other.
Does anybody have a good picture of these valves in a 1968/69 Charger? (Other than the other pic below)

As well, does the booster have a specialized brake rod and linkage that are different from the drum set-up?
Any information would be appreciated.
Thanks

[gtx6970]

The silver one  is  the one I have in the shop.
It is  an original 1969 Disc brake car and the valves are correct for both  1968 and 1969

[Magnumcharger]

That's some nice pictures there Bill!
Could you tell about the booster?
For instance, is the bellcrank the same as the drum set-up? What's the difference with the actuator rod (if any)?

And...I notice that your silver car is missing the clutch shaft pivot bracket on the left frame rail.
Is there a difference to any of the components on an automatic car?

[poppa]

On the silver one,the front valve is the safety valve,the one towards the back looks like a prop valve.