Proportioning valve help (1 Viewer)

[attackchef]

I have a valve like this one
eBay Motors: GM Disc/Drum Combination Proportioning Valve Street Rod (item 250406183078 end time Apr-19-09 20:53:06 PDT)
Im assuming the rear lines go out of the back where the larger adapting fitting is.
There is two more on the top, Im assuming they are the in lines.
The question is on the front, there is one female fitting on top, on the slanted part, and one fitting on the bottom side.
With my disc/drum set up (71 40 with mini truck disc) How do I run the lines? Two for the front? or cap one and branch the front at the axle.

 

[fieldsken1]

the two on top are from the master the one in the rear go to the rear as far as the front just plug one off and use one it does not matter which on you use