proportioning valve??

Use the third one on the right of the picture at this link:

http://www.inlinetube.com/Prop Valves/BLK245.htm

It's the one for Disc/Drum and it will work with manual (no power booster), I know because it's what I'm using on my Demon with same brake set up.

What Demon 408 said is correct........ it should look like the one all the way to the right, ( lower portion of the valve look's like texas). From my understanding, Mopar had two different Disc/Drum combo valve's, one was made by Kelsey Haye's, can't remember who made the other type, but either should work. I do remember reading on mopart's about these valves, and they do sell rebuild kit's for both. I don't know who was selling them. Have you been having some trouble with your brake system, BEFORE you changed out to the newer style M/C?? Hope this help's.