Will the work for 4 wheel disc

junkyardhero said
*shakes magic 8-ball*

"cannot predict now"

all kidding aside, without knowing the master cylinder and the caliper it's impossible to say, and even then you can only make a educated guess.

if he was running parts or a combo somebody else was running i'm sure there'd be more information available to get closer to a definitive yes or no. but i'd file this one under "better to have and not need" if i was in this situation.

Right, but I was speaking in general terms. As a rule of thumb, 4 wheel disc systems don't use a proportioning valve. That's not to say you could not plumb on in. The one in his original post though, I don't believe will work as it if for disc/drum if I am not mistaken.