You can use a stock one off of a 79-83 and some early 84s. Or get an adjustable proportioning valve. Cheapest place to get one is Speedway Motors. Buy their version not the Wilwood because its $20 more. Then when you get it peel the sticker off and its a Wilwood.
Here is how i did mine I had to buy a pipe cutter and flare nut tool. Toyota's have a 10mm flare and the one from jegs or summit is 3/16th so you have to change them over
I haven't gotten them yet. But I'm going to the brake shop tomorrow for it. Its just a 1/8" NPT 18 fitting with a metric brake fitting on the other end.