kelsey hayes part and proportioning valve

1969383S said
The rear hold off valve and short line from the distribution block are available from In-Line tubes and others as well. These are the stock pieces. Aftermarket adjustable portioning valves will give you the same when plumbed in correctly.

Im assuming it would be less modification to use the original stuff from inline that your speaking of than using an adjustable one? Also, I THINK I read somewhere on here that you can use the prop valve from a 1973-76 disk drum car also, even though its a single piston type system?