Which proportioning valve should I use??

Plugging one of the two front output lines on the prop valve, that won’t cause problems running two brakes off of one port? I don’t think I would have thought of this route, interesting…

Here are several different set ups to check out. This is Hurst Instructions. All of them show after the use of a Proportion valve.

http://static.summitracing.com/global/images/instructions/huu-1745000(2)1.pdf