Distribution block and adjustable prop valve
I used one of these on my car, I eliminated the stock distro valve and plumbed everything to this. It's actually the same as the Wilwood one, just Summit branded for $25 cheaper.
Summit RacingĀ® Adjustable Brake Proportioning Valves SUM-G3906
The $25 I saved allowed me to almost pay for the mounting bracket for it. Although I had to modify it a bit since I use a Dr Diff master, not the Wilwood one it was designed to attach to.
Wilwood Combination Proportioning Valve Mounting Brackets 220-13189
It was a tough plumbing job to get the linelock installed between the master and the valve using that bracket though.