Full Disc Brake Conversion, which distribution block?

[Charger1969B]

I recently swapped over from 4 wheel drum to 4 wheel disc using the Right Stuff conversion kit. So far I am not too thrilled with the setup, or the tech support from Right Stuff but here I am. My kit did come with an adjustable proportioning valve for the rear brakes, but my question is, what distribution valve do I need to switch to coming out of my Master Cylinder?
I'm assuming that my original drum one will no longer be correct, and I can't find which one to use. Any help with would be greatly appreciated, and a link or picture would be even better!
Thanks!
1969 Charger RT/SE 440

 

[70chall440]

This is the one I use, you should not need the adjustable one if you use one of these, that said if you have an adjustable and nothing else then you should be able to adjust it to work.

https://westernchassis.com/Proportioning-and-Combination-Valve-AC-Delco-172-1353-and-172-1361-Type/

if you pedal is spongy or you are not getting good brakes, it is probably the MC and not the P valve, more than likely your MC bore size is too big. I usually use a 7/8th bore which Mopar makes, there is a modern version and they used one on a 72-75 A body (I think).